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WO2012090305A1 - Acoustic device and output sound control method - Google Patents

Acoustic device and output sound control method Download PDF

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Publication number
WO2012090305A1
WO2012090305A1 PCT/JP2010/073729 JP2010073729W WO2012090305A1 WO 2012090305 A1 WO2012090305 A1 WO 2012090305A1 JP 2010073729 W JP2010073729 W JP 2010073729W WO 2012090305 A1 WO2012090305 A1 WO 2012090305A1
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WO
WIPO (PCT)
Prior art keywords
sound
unit
vehicle interior
vehicle
output sound
Prior art date
Application number
PCT/JP2010/073729
Other languages
French (fr)
Japanese (ja)
Inventor
真希 大村
昌弘 工藤
佑介 岡田
田中 純一
肇 斎藤
Original Assignee
パイオニア株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by パイオニア株式会社 filed Critical パイオニア株式会社
Priority to JP2011553639A priority Critical patent/JP4944284B1/en
Priority to PCT/JP2010/073729 priority patent/WO2012090305A1/en
Publication of WO2012090305A1 publication Critical patent/WO2012090305A1/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60QARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q5/00Arrangement or adaptation of acoustic signal devices
    • B60Q5/005Arrangement or adaptation of acoustic signal devices automatically actuated
    • B60Q5/008Arrangement or adaptation of acoustic signal devices automatically actuated for signaling silent vehicles, e.g. for warning that a hybrid or electric vehicle is approaching
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K15/00Acoustics not otherwise provided for
    • G10K15/02Synthesis of acoustic waves

Definitions

  • the present invention relates to an audio device, an output sound control method, an output sound control program, and a recording medium on which the output sound control program is recorded.
  • Patent Document 1 hereinafter referred to as “Conventional Example 1”.
  • a running sound signal is generated on the basis of detection results such as the vehicle speed, the number of revolutions of a motor that is a power source, and the accelerator opening, and the running sound is output from the speaker to the front outside the vehicle. It has become.
  • the execution / non-execution of the running sound output is controlled according to the type of area in which the vehicle is running.
  • the level of driving sound in the passenger compartment is dramatically lower than that of a conventional gasoline vehicle. If the driving sound level in the passenger compartment becomes low in this way, a situation may occur in which the vehicle occupant cannot properly feel the driving presence due to the engine sound obtained in the case of a gasoline vehicle. . Occurrence of such a situation is often not preferable from the viewpoint of safe driving and a comfortable driving feeling.
  • the sound generated in the passenger compartment is not limited to the pseudo engine sound, but may be a reproduction sound of music or the like. Even if this type of sound is a vehicle interior sound, if the volume of the vehicle interior sound increases, the driver tends to have the same effect as when the engine sound is output to the vehicle interior described above. is there.
  • the vehicle-recollected sound such as the pseudo engine sound should be output outside the vehicle from the viewpoint of traffic safety according to the type and volume of the vehicle interior sound in the vehicle interior.
  • the present invention has been made in view of the above circumstances, and provides a new acoustic device and an output sound control method capable of outputting an appropriate vehicle recall sound to the outside of the vehicle for alerting pedestrians and the like.
  • the purpose is to do.
  • the present invention is an acoustic device that supplies an external output sound signal to a sound output unit that outputs an external output sound toward the outside of the vehicle, and generates the external output sound signal.
  • a supply unit that supplies the sound output unit; a control unit that controls the supply unit; and an acquisition unit that acquires at least one of the waveform related information and volume information of the vehicle interior sound in the vehicle interior of the vehicle.
  • the control unit controls the generation of the external output sound signal based on the acquisition result by the acquisition unit.
  • the present invention provides an output sound used in an acoustic device including a supply unit that generates an external output sound signal and supplies the external output sound to a sound output unit that outputs the external output sound toward the outside of the vehicle.
  • the present invention is an output sound control program characterized by causing an arithmetic unit to execute the output sound control method of the present invention.
  • the present invention is a recording medium in which the output sound control program of the present invention is recorded so as to be readable by a calculation unit.
  • FIG. 7 is a flowchart for explaining a control process of generation of a vehicle-like sound output toward the outside of the vehicle in the apparatus of FIG. 6.
  • FIG. 1 shows a schematic configuration of an acoustic device 700A according to the first embodiment.
  • the acoustic device 700A is mounted on an electric vehicle MV (hereinafter referred to as “vehicle MV”), and a sound output unit 790 is connected thereto.
  • vehicle MV electric vehicle MV
  • the sound output unit 790 includes a speaker.
  • the sound output unit 790 receives an external output sound signal sent from the acoustic device 700A.
  • the sound output part 790 outputs the external output sound according to an external output sound signal toward the exterior of the vehicle MV.
  • the above-described acoustic device 700A includes a storage unit 710, an acquisition unit 720, and an operation unit 730.
  • the acoustic device 700 ⁇ / b> A includes a control unit 740 and a supply unit 750.
  • the storage unit 710 has a nonvolatile storage area.
  • the storage unit 710 can be accessed by the supply unit 750.
  • sound source information related to the vehicle recall sound is stored in the non-volatile storage area of the storage unit 710.
  • the sound source information is composed of a plurality of sound data.
  • the plurality of sound data is time-series data, and a sound waveform is formed by arranging the plurality of sound data in time sequence.
  • vehicle recall sound is a sound that can notify a pedestrian or the like of the presence of the vehicle MV.
  • vehicle recall sound includes pseudo engine sound, sine waveform sound, and the like.
  • the acquisition unit 720 acquires at least one of the waveform related information and volume information of the vehicle interior sound in the vehicle interior of the vehicle MV.
  • the “waveform related information” is information regarding the type of sound contributing to the waveform of the vehicle interior sound.
  • the acquisition unit 720 acquires information as to whether or not a pseudo engine sound is included in the vehicle interior sound as “waveform related information”.
  • the acquisition result by the acquisition unit 720 is sent to the control unit 740.
  • the acquisition unit 720 analyzes a sound collection result collected at a predetermined position in the vehicle interior, and acquires waveform-related information and volume information of the vehicle interior sound in the vehicle interior. .
  • the operation unit 730 includes a key unit.
  • the operation unit 730 can be operated by a user of the vehicle MV, and designation regarding generation of an external output sound signal is performed to the control unit 740 by designation input using the operation unit 730.
  • the control unit 740 receives the acquisition result sent from the acquisition unit 720. In addition, the control unit 740 receives a designation input related to generation of an external output sound signal sent from the operation unit 730. And the control part 740 controls the production
  • the supply unit 750 reads the sound source information from the storage unit 710 and generates an external output sound signal under the control of the control unit 740.
  • the external output sound signal generated in this way is sent to the sound output unit 790.
  • the acquisition unit 720 acquires the waveform related information and volume information of the vehicle interior sound in the vehicle interior. Then, the acquisition unit 720 sends the acquisition result to the control unit 740.
  • the control unit 740 Upon receiving the acquisition result sent from the acquisition unit 720, the control unit 740 determines whether or not the engine sound is included in the vehicle interior sound based on the acquisition result. When determining that the engine interior sound is included in the vehicle interior sound, the control unit 740 generates a signal generation control command for causing the supply unit 750 to generate the external output sound signal.
  • the control unit 740 supplies the external output sound signal to the supply unit even in a state in which the designation not using the operation unit 730 is made so as not to generate the external output sound signal. 750 is generated.
  • control unit 740 determines whether or not the volume of the vehicle interior sound output to the vehicle interior is greater than or equal to a predetermined value based on the acquisition result by the acquisition unit 720. Even when it is determined that the volume of the vehicle interior sound is equal to or higher than the predetermined value, the control unit 740 generates a signal generation control command for causing the supply unit 750 to generate the external output sound signal.
  • the vehicle interior sound includes the pseudo engine sound.
  • the control unit 740 causes the supply unit 750 to generate an external output sound signal.
  • the supply unit 750 When the supply unit 750 receives the signal generation control command, the supply unit 750 sequentially reads the sound data included in the sound source information in the storage unit 710. Then, the supply unit 750 adjusts the volume of the reproduced sound while sequentially outputting the read sound data internally in a predetermined cycle. As a result, an external output sound signal is generated. The external output sound signal generated in this way is sent to the sound output unit 790.
  • the sound output unit 790 that has received the external output sound signal outputs the vehicle recall sound according to the external output sound signal toward the outside of the vehicle MV.
  • the vehicle interior sound includes the pseudo engine sound or the volume of the vehicle interior sound is high. If the value is equal to or greater than the predetermined value, the vehicle recall sound is output outside the vehicle.
  • the acquisition unit 720 acquires vehicle interior sound waveform related information and volume information in the vehicle interior.
  • the control unit 740 determines whether or not the pseudo engine sound is included in the vehicle interior sound based on the acquisition result by the acquisition unit 720. Then, when it is determined that the engine interior sound is included in the vehicle interior sound, the control unit 740 generates the external output sound signal to the supply unit 750 even when it is specified that the external output sound signal is not generated.
  • control unit 740 determines whether or not the volume of the vehicle interior sound output to the vehicle interior is greater than or equal to a predetermined value based on the acquisition result by the acquisition unit 720. Even when it is determined that the volume of the vehicle interior sound is equal to or higher than the predetermined value, the control unit 740 supplies the external output sound signal to the supply unit even if it is specified that the external output sound signal is not generated. 750 to generate.
  • the vehicle recall sound is output outside the vehicle.
  • FIG. 2 shows a schematic configuration of an acoustic device 700B according to the second embodiment.
  • the acoustic device 700 ⁇ / b> B includes a server device 810 and a terminal device 910.
  • data communication using the communication network 500 is possible between the server device 810 and the terminal device 910.
  • the server device 810 is installed at a fixed position in a building, for example.
  • the server device 810 includes a storage unit 710, a control unit 740, and a supply unit 750.
  • the terminal device 910 is mounted on the vehicle MV.
  • the terminal device 910 includes an acquisition unit 720 and an operation unit 730.
  • a sound output unit 790 is mounted on the vehicle MV.
  • the acoustic device 700B is compared with the acoustic device 700A of the first embodiment described above, when the acquisition unit 720 sends the acquisition result to the control unit 740, when the operation unit 730 sends the designation input to the control unit 740, and When the supply unit 750 sends the external output sound signal to the sound output unit 790, data communication using the communication network 500 is performed, which is different from the acoustic device 700A.
  • the acquisition unit 720 in the terminal device 910 acquires the vehicle interior sound waveform related information and volume information in the vehicle interior. Then, the acquisition unit 720 sends the acquisition result to the server device 810 via the communication network 500. In addition, the operation unit 730 in the terminal device 910 sends a designation input related to generation of an external output sound signal designated by the user to the server device 810 via the communication network 500.
  • the control unit 740 receives the acquisition result sent from the acquisition unit 720. And the control part 740 makes the supply part 750 produce
  • the supply unit 750 Upon receiving the signal generation control command sent from the control unit 740, the supply unit 750 sequentially reads the sound data included in the sound source information in the storage unit 710, as in the first embodiment, and outputs the external output sound signal. Is generated. Then, the supply unit 750 sends the generated external output sound signal to the sound output unit 790 via the communication network 500.
  • the vehicle interior sound includes the pseudo engine sound or the volume of the vehicle interior sound is high. If the value is equal to or greater than the predetermined value, the sound output unit 790 outputs the vehicle recall sound to the outside of the vehicle.
  • the acquisition unit analyzes a sound collection result collected at a predetermined position in the vehicle interior, and acquires waveform-related information and volume information of the vehicle interior sound in the vehicle interior. I did it.
  • the acquisition unit may communicate with a vehicle interior acoustic device that outputs vehicle interior sound into the vehicle interior to acquire at least one of the waveform related information and volume information of the vehicle interior sound.
  • control unit adopts a configuration that also performs control to output the vehicle interior sound into the vehicle interior, and from the control information related to the output of the vehicle interior sound by the control unit, the acquisition unit obtains the waveform related information and volume of the vehicle interior sound. You may make it acquire at least one of information.
  • the control unit when the engine sound is included in the vehicle interior sound, and when the volume of the vehicle interior sound is equal to or higher than the predetermined value, the external output sound signal is not generated. Even in a state in which the control is performed, the control unit forcibly causes the supply unit to generate an external output sound signal. On the other hand, the control unit forcibly causes the supply unit to generate the external output sound signal only when the engine interior sound is included in the vehicle interior sound in a state where it is specified not to generate the external output sound signal. You may do it. In addition, the control unit forcibly causes the supply unit to generate the external output sound signal only when the volume of the vehicle interior sound is equal to or higher than a predetermined value in a state where the generation of the external output sound signal is not specified. May be.
  • the control unit when the engine sound is included in the vehicle interior sound, and when the volume of the vehicle interior sound is equal to or higher than the predetermined value, the external output sound signal is not generated. Even in a state in which the control is performed, the control unit forcibly causes the supply unit to generate an external output sound signal.
  • the control unit may force the supply unit to generate an external output sound signal.
  • the acoustic device is not provided with a sound output unit. However, when there is no existing sound output unit that can be used, the acoustic device includes a sound output unit. It is good.
  • the acoustic device is provided with a storage unit.
  • the existing storage unit is used.
  • the acoustic device may not have a storage unit.
  • the server device 810 includes the storage unit 710, the control unit 740, and the supply unit 750, but any of these components is arbitrarily mounted on the vehicle side. You can
  • FIG. 3 shows a schematic configuration of the acoustic device 100A according to the first embodiment.
  • the acoustic device 100A is an aspect of the acoustic device 700A (see FIG. 1) of the first embodiment described above.
  • the acoustic device 100A is mounted on a vehicle CR that travels on a road using an electric motor as a drive mechanism.
  • a sound output unit 210 as a sound output unit 790 connected to the acoustic device 100A and a vehicle speed sensor 220 are connected to the vehicle CR.
  • the acoustic device 100A is connected to the vehicle interior acoustic device 300A.
  • the sound output unit 210 includes a left speaker that outputs sound toward the left front and a right speaker that outputs sound toward the right front.
  • the sound output unit 210 receives an external output sound signal AOS sent from the acoustic device 100A. Then, the sound output unit 210 outputs an external output sound from the left and right speakers to the outside of the vehicle CR according to the external output sound signal AOS.
  • the vehicle speed sensor 220 detects the rotation of the wheel or axle of the vehicle CR.
  • the vehicle speed detection result SPS by the vehicle speed sensor 220 is sent to the acoustic device 100A.
  • vehicle interior acoustic device 300A includes a speaker that outputs vehicle interior sound toward the vehicle interior.
  • the vehicle interior acoustic device 300A reproduces simulated engine sound, music, and the like under the control of a control unit 170A (described later) of the acoustic device 100A, and outputs the reproduced sound toward the vehicle interior.
  • the acoustic device 100 ⁇ / b> A includes a storage unit 110 and a travel information collection unit 120.
  • the acoustic device 100 ⁇ / b> A includes a supply unit 130 as a supply unit 750 and an operation input unit 150 as an operation unit 730.
  • the acoustic device 100A includes an acquisition unit 720 and a control unit 170A as the control unit 740.
  • the storage unit 110 includes a memory element, and stores various information data used in the acoustic device 100A. Such information data includes sound source information SSI.
  • the storage unit 110 can be accessed by the supply unit 130 and the control unit 170A.
  • the sound source information SSI is composed of a plurality of sound data (sound data # j1, sound data # j2,..., Sound data #jN).
  • a sound signal is generated by repeating the sequential reading of the sound data # j1 to #jN and outputting in order of reading at a predetermined period ⁇ .
  • the traveling information collection unit 120 receives the vehicle speed detection result SPS sent from the vehicle speed sensor 220. Then, the travel information collection unit 120 converts the vehicle speed detection result SPS into vehicle speed information SP in a form that can be handled by the control unit 170A. The vehicle speed information SP thus obtained is sent to the control unit 170A.
  • the supply unit 130 sequentially reads a plurality of sound data included in the sound source information SSI as sound data SDD under the control of the control unit 170A, and then reads the sound data with a predetermined period ⁇ . Are sequentially output internally. Then, the supply unit 130 performs a volume adjustment process on the internally output signal according to the volume specification value VLC sent from the control unit 170A, and generates an external output sound signal AOS. The external output sound signal AOS thus generated is sent to the sound output unit 210.
  • the above-described operation input unit 150 includes a key unit provided in the main body of the acoustic device 100A and / or a remote input device including the key unit.
  • a touch panel provided in the display device can be used as the key part provided in the main body part.
  • the voice using the voice recognition technology can be used instead of the configuration having the key part or in combination. It is also possible to adopt a configuration in which input is performed at.
  • the user can operate the operation input unit 150 to set the specification related to the generation of the external output sound signal AOS.
  • the input content performed using the operation input unit 150 is sent as operation input data IPD from the operation input unit 150 to the control unit 170A.
  • the above-described control unit 170A includes a central processing unit (CPU).
  • the control unit 170A executes an external output sound control process toward the outside of the vehicle CR in the acoustic device 100A by executing a predetermined program.
  • the external output sound control process by the control unit 170A will be described later.
  • the control unit 170A performs an internal output sound control process of the vehicle interior sound output by the vehicle interior acoustic device 300A.
  • the control unit 170A corresponds to the necessity of output of the internal output sound input using the operation input unit 150, the type of internal output sound (pseudo engine sound, music playback sound, etc.).
  • An internal output sound designating ISC including the contents of designating the output volume of the identifier and the like and the internal output sound is sent to the vehicle interior acoustic device 300A.
  • 170 A of control parts can grasp
  • step S11 when the operation of the acoustic device 100A is started, as shown in FIG. 4, first, in step S11, the control unit 170A is designated not to generate the external output sound signal AOS. It is determined whether or not. If the result of this determination is negative (step S11: N), the process proceeds to step S15 described later. On the other hand, if the result of the determination in step S11 is affirmative (step S11: Y), the process proceeds to step S12.
  • step S12 the control unit 170A outputs the internal output sound toward the vehicle interior based on the designated content of whether or not to output the internal output sound to the vehicle interior acoustic device 300A. It is determined whether or not. If the result of this determination is negative (step S12: N), the process returns to step S11. On the other hand, when the result of the determination in step S12 is affirmative (step S12: Y), the process proceeds to step S13.
  • step S13 the control unit 170A determines whether or not the internal output sound includes a pseudo engine sound based on the specified content of the type of the internal output sound for the vehicle interior acoustic device 300A. It is determined whether or not a pseudo engine sound is included. If the result of this determination is negative (step S13: N), the process proceeds to step S14.
  • step S14 control unit 170A determines whether or not the volume of the internal output sound output to the vehicle interior is greater than or equal to a predetermined value based on the designated content of the output volume of the internal output sound for vehicle interior acoustic device 300A. Thus, it is determined whether the volume of the vehicle interior sound is equal to or higher than a predetermined value.
  • the “predetermined value” is determined in advance based on experiments, simulations, experiences, and the like from the viewpoint of the volume of vehicle interior sound for which it is preferable for the vehicle safety sound to be output to the outside.
  • step S13 determines whether the determination result in step S13 described above is affirmative (step S13: Y), or if the determination result in step S14 is affirmative (step S14: Y), the process proceeds to step S15. Proceed to
  • step S15 the control unit 170A generates a signal generation control command PDC for causing the supply unit 130 to generate the external output sound signal AOS. Then, the control unit 170A sends a signal generation control command PDC to the supply unit 130. In addition, the control unit 170A generates a volume designation value VLC based on the vehicle speed information SP sent from the travel information collection unit 120, and sends the generated volume designation value VLC to the supply unit 130.
  • the supply unit 130 When the supply unit 130 receives the signal generation control command PDC and the sound volume designation value VLC described above, the supply unit 130 sequentially reads sound data included in the sound source information SSI in the storage unit 110.
  • the supplying unit 130 adjusts the volume according to the volume specification value VLC while internally outputting the read sound data sequentially in a predetermined cycle ⁇ , and generates an external output sound signal AOS.
  • the external output sound signal AOS thus generated is sent to the sound output unit 210.
  • the sound output unit 210 that has received the external output sound signal AOS sent from the supply unit 130 outputs a sound according to the external output sound signal AOS to the outside of the vehicle.
  • the vehicle recall sound is output outside the vehicle according to the external output sound control process by the control unit 170A. Thereafter, the process returns to step S11.
  • step S14 determines whether the result of the determination in step S14 described above is negative (step S14: N).
  • the process proceeds to step S16.
  • control unit 170A generates a signal generation control command PDC indicating that external supply sound signal AOS is not generated by supply unit 130. Then, the control unit 170A sends a signal generation control command PDC to the effect that the external output sound signal AOS is not generated to the supply unit 130.
  • the supply unit 130 When the supply unit 130 receives the signal generation control command PDC, the supply unit 130 interrupts the generation of the external output sound signal AOS when the external output sound signal AOS is generated. Thereafter, the process returns to step S11.
  • the controller 170A determines whether or not the vehicle interior acoustic device 300A outputs the internal output sound toward the vehicle interior based on the designated content of whether or not to output the internal output sound to the vehicle interior acoustic device 300A. Determine. Subsequently, when the result of the determination is affirmative, the controller 170A determines whether or not the engine output sound includes the pseudo engine sound based on the specified content of the type of the engine output sound for the vehicle interior acoustic device 300A.
  • the controller 130A supplies the external output sound signal AOS to the supply unit 130 even when it is specified that the external output sound signal AOS is not generated. To generate.
  • the controller 170A controls the vehicle interior based on the designated content of the output volume of the internal output sound for the vehicle interior acoustic device 300A. By determining whether the volume of the internal output sound that is output to the vehicle is greater than or equal to a predetermined value, it is determined whether the volume of the vehicle interior sound is greater than or equal to a predetermined value.
  • the controller 170A determines the external output sound signal AOS even when it is determined that the volume of the vehicle interior sound is equal to or higher than the predetermined value, even when it is instructed not to generate the external output sound signal AOS.
  • the supply unit 130 generates the data.
  • the vehicle recall sound is output outside the vehicle.
  • FIG. 5 shows a schematic configuration of an acoustic device 100B according to the second embodiment.
  • the acoustic device 100B is an aspect of the acoustic device 700A (see FIG. 1) of the first embodiment described above, similarly to the acoustic device 100A according to the first example.
  • the acoustic device 100B is different from the acoustic device 100A of the first embodiment described above in that an acquisition unit 160B as the acquisition unit 720 and a control unit as the control unit 740 instead of the control unit 170A.
  • the difference is that 170B is provided.
  • the acoustic device 100B is connected to the vehicle interior acoustic device 300B.
  • the description will be given mainly focusing on these differences.
  • the above-described vehicle interior acoustic device 300B is independent of the acoustic device 100B, reproduces simulated engine sound, music, and the like and outputs the reproduced sound toward the vehicle interior.
  • the vehicle interior acoustic device 300B also determines whether the internal output sound is output, the type of internal output sound (an identifier corresponding to the pseudo engine sound, the music playback sound, etc.) and the output volume of the internal output sound, and the internal output sound information ISI. To the acquisition unit 160B.
  • the acquisition unit 160B communicates with the vehicle interior acoustic device 300B. And the acquisition part 160B acquires the waveform relevant information and volume information of the internal output sound in a vehicle interior from the vehicle interior acoustic apparatus 300B. The acquisition result by the acquisition unit 160B is sent to the control unit 170B as vehicle interior sound information IAI.
  • the acquisition unit 160B obtains the presence / absence of the output of the internal output sound and the simulated engine sound as the vehicle interior sound as “waveform related information”. Get information about whether it is included. In addition, the acquisition unit 160B acquires the output volume of the internal output sound as “volume information”.
  • the control unit 170B includes a central processing unit (CPU), similar to the control unit 170A described above.
  • the control unit 170B receives the vehicle interior sound information IAI sent from the acquisition unit 160B.
  • the control part 170B performs the external output sound control process toward the exterior of vehicle CR in the audio equipment 100B.
  • the external output sound control process by the controller 170B will be described later.
  • step S11 the control unit 170B determines whether or not it is specified that the external output sound signal AOS is not generated. If the result of this determination is negative (step S11: N), the process proceeds to step S15. On the other hand, if the result of the determination in step S11 is affirmative (step S11: Y), the process proceeds to step S12.
  • step S12 whether or not the control unit 170B outputs the internal output sound toward the vehicle interior based on the information on the presence or absence of the output of the internal output sound in the vehicle interior sound information IAI. Determine. If the result of this determination is negative (step S12: N), the process returns to step S11. On the other hand, when the result of the determination in step S12 is affirmative (step S12: Y), the process proceeds to step S13.
  • step S13 the control unit 170B determines whether or not the internal output sound includes a pseudo engine sound based on the information on the type of the internal output sound in the vehicle interior sound information IAI, thereby simulating the vehicle interior sound. It is determined whether or not engine sound is included. If the result of this determination is negative (step S13: N), the process proceeds to step S14.
  • step S14 the controller 170B determines whether the volume of the internal output sound is greater than or equal to a predetermined value based on the information on the output volume of the internal output sound in the vehicle interior sound information IAI. Is determined to be greater than or equal to a predetermined value.
  • step S13 determines whether the determination result in step S13 described above is affirmative (step S13: Y), or if the determination result in step S14 is affirmative (step S14: Y), the process proceeds to step S15. Proceed to
  • step S15 the control unit 170B performs the same processing as the processing in the first embodiment.
  • the vehicle recall sound is output outside the vehicle according to the external output sound control process by the control unit 170B. Thereafter, the process returns to step S11.
  • step S14 determines whether the result of the determination in step S14 described above is negative (step S14: N).
  • step S16 the control unit 170B performs the same process as the process in the first embodiment.
  • the process of step S16 is executed, when the supply unit 130 generates the external output sound signal AOS, the generation of the external output sound signal AOS is interrupted. Thereafter, the process returns to step S11.
  • the acquisition unit 160B communicates with the vehicle interior acoustic device 300B to acquire the internal output sound information ISI, and the acquisition result is used as the vehicle interior sound information IAI to the control unit 170B. send.
  • the controller 170B determines whether or not the vehicle interior acoustic device 300B outputs the internal output sound toward the vehicle interior based on the presence / absence of the output of the internal output sound in the vehicle interior sound information IAI. Subsequently, when the result of the determination is affirmative, the control unit 170B determines whether or not the internal output sound includes the pseudo engine sound based on the information on the type of the internal output sound in the vehicle interior sound information IAI.
  • the controller 170B determines whether or not the pseudo engine sound is included in the vehicle interior sound. Then, when the controller 170B determines that the engine interior sound includes the pseudo engine sound, the controller 170B supplies the external output sound signal AOS to the supply unit 130 even in a state where it is specified that the external output sound signal AOS is not generated. To generate.
  • the control unit 170B when the vehicle interior acoustic device 300B outputs the internal output sound toward the vehicle interior, the control unit 170B generates the vehicle interior based on the output volume information of the internal output sound in the vehicle interior sound information IAI. By determining whether the volume of the output internal output sound is equal to or higher than a predetermined value, it is determined whether the volume of the vehicle interior sound is equal to or higher than a predetermined value. Then, even when it is determined that the volume of the vehicle interior sound is equal to or higher than the predetermined value, the control unit 170B does not generate the external output sound signal AOS even if it is specified that the external output sound signal AOS is not generated. The supply unit 130 generates the data.
  • the vehicle recall sound is output outside the vehicle.
  • FIG. 6 shows a schematic configuration of an acoustic device 100C according to the third embodiment.
  • the acoustic device 100C is an aspect of the acoustic device 700A (see FIG. 1) of the first embodiment described above, similarly to the acoustic device 100B according to the second example.
  • the acoustic device 100 ⁇ / b> C includes an acquisition unit 160 ⁇ / b> C instead of the acquisition unit 160 ⁇ / b> B, and a control unit instead of the control unit 170 ⁇ / b> B, as compared with the acoustic device 100 ⁇ / b> B of the second embodiment described above.
  • the difference is that 170C is provided.
  • the description will be given mainly focusing on these differences.
  • the acquisition unit 160C includes a sound collection device such as a microphone. This acquisition unit 160C is installed at a predetermined position such as a headrest of a driver's seat in the passenger compartment, and collects sound in the passenger compartment. Then, the acquisition unit 160C analyzes the sound collection result, and acquires information on the presence / absence of vehicle interior sound, the type of vehicle interior sound, and the output volume of vehicle interior sound. The information acquired in this way is sent to the controller 170C as vehicle interior sound information IAI.
  • vehicle interior sound information IAI vehicle interior sound information
  • the acquisition unit 160C includes the presence / absence of the vehicle interior sound and whether the vehicle interior sound includes the pseudo engine sound as the “waveform related information”. Get information about whether or not. In addition, the acquisition unit 160C acquires the output volume of the vehicle interior sound as “volume information”.
  • the control unit 170C includes a central processing unit (CPU), similar to the control unit 170B described above.
  • the control unit 170C receives the vehicle interior sound information IAI sent from the acquisition unit 160C, and performs an external output sound control process toward the outside of the vehicle CR in the acoustic device 100C.
  • the external output sound control process by the controller 170C will be described later.
  • the sound collecting operation of the vehicle interior sound by the acquisition unit 160C is started, and the vehicle interior sound information IAI is sent to the control unit 170C ( (See FIG. 6).
  • step S21 the controller 170C designates that the external output sound signal AOS is not generated, as in step S11 in the first embodiment. It is determined whether it is done. If the result of this determination is negative (step S21: N), the process proceeds to step S25. On the other hand, when the result of the determination in step S21 is affirmative (step S21: Y), the process proceeds to step S22.
  • step S22 the control unit 170C determines whether or not the vehicle interior sound is generated in the vehicle interior based on the information on the presence or absence of the vehicle interior sound in the vehicle interior sound information IAI. If the result of this determination is negative (step S22: N), the process returns to step S21. On the other hand, when the result of the determination in step S22 is affirmative (step S22: Y), the process proceeds to step S23.
  • step S23 the controller 170C determines whether or not the vehicle interior sound includes the pseudo engine sound based on the information on the type of the vehicle interior sound in the vehicle interior sound information IAI. If the result of this determination is negative (step S23: N), the process proceeds to step S24.
  • step S24 control unit 170C determines whether or not the volume of the vehicle interior sound is greater than or equal to a predetermined value based on the information on the output volume of the vehicle interior sound in vehicle interior sound information IAI.
  • step S23 determines whether the determination result in step S23 described above is affirmative (step S23: Y), or if the determination result in step S24 is affirmative (step S24: Y).
  • step S25 the controller 170C generates a signal generation control command PDC for causing the supply unit 130 to generate the external output sound signal AOS, as in step S15 in the first embodiment.
  • step S25 the process of step S25 is executed in this way, the vehicle recall sound is output outside the vehicle according to the external output sound control process by the control unit 170C. Thereafter, the process returns to step S21.
  • step S24 the process proceeds to step S26.
  • step S26 the control unit 170C generates a signal generation control command PDC indicating that the external output sound signal AOS is not generated by the supply unit 130, as in step S16 in the first embodiment.
  • PDC signal generation control command
  • the acquisition unit 160C collects the sound in the vehicle interior and analyzes the sound collection result to determine whether there is a vehicle interior sound, the type of vehicle interior sound, and the vehicle interior sound. Get the output volume information of.
  • the acquisition result acquired in this way is sent to the controller 170C as vehicle interior sound information IAI.
  • 170 C of control parts determine whether the vehicle interior sound has generate
  • controller 170C determines that the engine interior sound is included in the vehicle interior sound
  • controller 130C supplies external output sound signal AOS even if it is specified that external output sound signal AOS is not generated. To generate.
  • the controller 170C controls the vehicle interior sound output in the vehicle interior based on the information on the output volume of the vehicle interior sound in the vehicle interior sound information IAI. It is determined whether the volume is equal to or higher than a predetermined value. Then, even when the control unit 170C determines that the volume of the vehicle interior sound is equal to or higher than the predetermined value, the controller 170C outputs the external output sound signal AOS even if it is specified that the external output sound signal AOS is not generated.
  • the supply unit 130 generates the data.
  • the vehicle recall sound is output outside the vehicle.
  • all the components of the acoustic devices 100A to 100C are mounted on the vehicle CR.
  • the vehicle CR is mounted as in the second embodiment described above.
  • the server device that can communicate with the terminal device may include some of the components of the acoustic devices 100A to 100C.
  • the acoustic devices 100A to 100C are not provided with the sound output unit 210. However, if there is no existing sound output unit 210 that can be used, the acoustic devices 100A to 100A are used. 100C may include a sound output unit.
  • the storage unit 110 included in the acoustic devices 100A to 100C stores the sound source information SSI.
  • the existing storage unit may be used, and the storage unit 110 may not store such information.
  • the supply unit sequentially reads the sound data constituting the sound source information SSI and sequentially outputs the sound data at a predetermined cycle ⁇ .
  • the cycle ⁇ is used as the vehicle speed information SP. By changing based on this, sound having different frequency characteristics depending on the vehicle speed may be output.
  • the control unit when the vehicle interior sound includes a pseudo engine sound, and when the volume of the vehicle interior sound is equal to or higher than a predetermined value, it is designated that the external output sound signal is not generated. Even in the state in which the control is performed, the control unit performs control so as to force the supply unit to generate an external output sound signal.
  • the control unit forcibly causes the supply unit to generate the external output sound signal only when the engine interior sound is included in the vehicle interior sound in a state where it is specified not to generate the external output sound signal. You may control as follows.
  • the control unit forcibly causes the supply unit to generate the external output sound signal only when the volume of the vehicle interior sound is equal to or higher than a predetermined value in the state where the generation of the external output sound signal is not specified. You may control.
  • the control unit when the vehicle interior sound includes a pseudo engine sound, and when the volume of the vehicle interior sound is equal to or higher than a predetermined value, it is designated that the external output sound signal is not generated. Even in a state in which the control is performed, the control unit forcibly causes the supply unit to generate an external output sound signal.
  • the control unit may force the supply unit to generate an external output sound signal.
  • the sound output unit when the vehicle interior sound includes a pseudo engine sound, or when the volume of the vehicle interior sound is equal to or higher than a predetermined value, the sound output unit performs the vehicle recall sound. Is output to the outside of the vehicle, but if there is no need to output the vehicle-like sound outside the vehicle from the viewpoint of traffic safety, such as when the vehicle speed is higher than the predetermined value, the vehicle-like sound is output outside the vehicle. You may make it control so that it may not be made.
  • the acoustic device 100A in the first embodiment may employ a configuration further including the acquisition unit 160C of the third embodiment that collects sound in the vehicle interior.
  • you may make it employ adopt the structure with which the acoustic apparatus 100B in said 2nd Example is further provided with the acquisition part 160C of 3rd Example.
  • the vehicle recall sound may be output outside the vehicle.
  • the vehicle recall sound can be output outside the vehicle even when the volume of the conversation or singing voice in the passenger compartment is equal to or higher than a predetermined value.
  • control units 170A to 170C perform control processing for generating external output sound by executing a program.
  • all or a part of the control unit is configured as a dedicated LSI. It may be performed by hardware using (Large Scale Integrated Circuit) or the like.
  • the program executed by the control units 170A to 170C may be acquired in a form recorded on a portable recording medium such as a CD-ROM or DVD, or distributed via a network such as the Internet. You may make it acquire by.

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Abstract

An acquisition unit (720) acquires waveform-related information and/or volume information relating to vehicle interior sound in the interior of a vehicle. When determining on the basis of the result of the acquisition by the acquisition unit (720) that pseudo engine sound is included in the vehicle interior sound, a control unit (740) causes a supply unit (750) to generate an exterior output sound signal even while the non-generation of the exterior output sound signal is designated. Further, also when determining that the volume of the vehicle interior sound is a predetermined value or more, the control unit (740) causes the supply unit (750) to generate the exterior output sound signal even while the non-generation of the exterior output sound signal is designated. As a result, when the pseudo engine sound is included in the vehicle interior sound and the volume of the vehicle interior sound is the predetermined value or more, vehicle warning sound is outputted to the exterior of the vehicle. Accordingly, the vehicle warning sound suitable to draw attention of pedestrians and the like can be outputted to the exterior of the vehicle.

Description

音響装置及び出力音制御方法Acoustic device and output sound control method
 本発明は、音響装置、出力音制御方法、出力音制御プログラム、及び、当該出力音制御プログラムが記録された記録媒体に関する。 The present invention relates to an audio device, an output sound control method, an output sound control program, and a recording medium on which the output sound control program is recorded.
 近年、電池を駆動力源とする電気自動車の普及が進んでいる。こうした自動車が走行する場合には、従来のガソリン車と比べて、車外における駆動音のレベルが飛躍的に低くなる。この結果、歩行者や自転車の操作者(以下、「歩行者等」と呼ぶ)が、後方等の視野外から接近する車両の存在に気付けない事態が起こり得る。かかる事態の発生は、交通安全上、深刻な問題である。 In recent years, electric vehicles using batteries as a driving force source have been spreading. When such a vehicle travels, the level of driving sound outside the vehicle is dramatically lower than that of a conventional gasoline vehicle. As a result, a situation may occur in which a pedestrian or a bicycle operator (hereinafter referred to as “pedestrian or the like”) does not notice the presence of a vehicle approaching from outside the field of view such as behind. The occurrence of such a situation is a serious problem for traffic safety.
 そこで、車両の走行状況に対応する擬似エンジン音等の走行音を車外へ出力する技術が提案されている(特許文献1参照:以下、「従来例1」と呼ぶ)。この従来例1の技術では、車速、動力源であるモータの回転数、アクセル開度等の検出結果に基づいて、走行音信号を生成して、走行音をスピーカから車外前方等へ出力するようになっている。そして車両が走行している地域の種類に応じて、走行音出力の実行/非実行を制御するようになっている。 Therefore, a technique for outputting traveling sound such as pseudo engine sound corresponding to the traveling state of the vehicle to the outside of the vehicle has been proposed (see Patent Document 1: hereinafter referred to as “Conventional Example 1”). In the technique of the conventional example 1, a running sound signal is generated on the basis of detection results such as the vehicle speed, the number of revolutions of a motor that is a power source, and the accelerator opening, and the running sound is output from the speaker to the front outside the vehicle. It has become. The execution / non-execution of the running sound output is controlled according to the type of area in which the vehicle is running.
 また、電池を駆動力源とする自動車が走行する場合には、従来のガソリン車と比べて、車室内における駆動音のレベルも飛躍的に低くなる。このように車室内における駆動音のレベルが低くなると、ガソリン車の場合には得られていたエンジン音による走行臨場感を、車両の搭乗者が、適切に感じることができなくなる事態が発生し得る。こうした事態の発生は、安全運転や、快適なドライブ感を味わうという観点からは、好ましくない場合が多い。 Also, when a vehicle using a battery as a driving power source travels, the level of driving sound in the passenger compartment is dramatically lower than that of a conventional gasoline vehicle. If the driving sound level in the passenger compartment becomes low in this way, a situation may occur in which the vehicle occupant cannot properly feel the driving presence due to the engine sound obtained in the case of a gasoline vehicle. . Occurrence of such a situation is often not preferable from the viewpoint of safe driving and a comfortable driving feeling.
 このため、擬似エンジン音を、車外だけでなく車室内にも発生させる技術が提案されている(特許文献2参照:以下、「従来例2」と呼ぶ)。この従来例2の技術では、搭乗者等により、任意に選択された所望の擬似エンジン音を、車両の車室内及び車外に発生させるようになっている。 For this reason, a technique for generating pseudo engine sound not only outside the vehicle but also inside the vehicle interior has been proposed (see Patent Document 2: hereinafter referred to as “Conventional Example 2”). In the technique of Conventional Example 2, a desired pseudo engine sound arbitrarily selected by a passenger or the like is generated inside and outside the vehicle.
特開2005-253236号公報JP 2005-253236 A 特開2006-349844号公報JP 2006-349844 A
 上述した従来例1,2では明示されていないが、走行中の道路の周辺環境や時間帯を考慮して、擬似エンジン音を車外へ出力するか否かを指定できることが望ましい。かかる機能を有するようにし、擬似エンジン音を車外へ出力しない指定がなされている状態であっても、車室内に擬似エンジン音を出力するようにすると、運転者は、車室内の擬似エンジン音の影響により、ガソリン車に乗っている感覚となることがある。そうした場合には、自分が運転している車両が静かな走行をしていて、歩行者等にとって気付かれにくい状態にあることを意識しづらくなってしまう傾向がある。 Although not clearly shown in the above-described conventional examples 1 and 2, it is desirable to be able to specify whether or not to output the pseudo engine sound to the outside of the vehicle in consideration of the surrounding environment and time zone of the running road. Even if it is specified to not output the pseudo engine sound outside the vehicle so as to have such a function, if the pseudo engine sound is output to the vehicle interior, the driver Depending on the influence, you may feel like you are riding a gasoline car. In such a case, there is a tendency that it becomes difficult to be aware that the vehicle that the driver is driving is quietly running and is difficult for a pedestrian or the like to notice.
 また、車室内に発生している音は、擬似エンジン音に限られず、楽曲等の再生音である場合もある。こうした種類の音が車室内音である場合であっても、車室内音の音量が大きくなると、上述した車室内に擬似エンジン音が出力されているときと同様の影響を運転者に及ぼす傾向がある。 In addition, the sound generated in the passenger compartment is not limited to the pseudo engine sound, but may be a reproduction sound of music or the like. Even if this type of sound is a vehicle interior sound, if the volume of the vehicle interior sound increases, the driver tends to have the same effect as when the engine sound is output to the vehicle interior described above. is there.
 このため、上記の傾向を考慮した上で、車室内における車室内音の種類や音量に応じて、交通安全の観点から、擬似エンジン音等の車両想起音を車外に出力すべきことが望ましいと判断される場合には、必ず、車両想起音を車外へ出力させることができる技術が望まれている。かかる要請に応えることが、本発明が解決すべき課題の一つとして挙げられる。 For this reason, in consideration of the above-mentioned tendency, it is desirable that the vehicle-recollected sound such as the pseudo engine sound should be output outside the vehicle from the viewpoint of traffic safety according to the type and volume of the vehicle interior sound in the vehicle interior. When it is determined, there is a demand for a technique that can always output a vehicle-like sound to the outside of the vehicle. Meeting this requirement is one of the problems to be solved by the present invention.
 本発明は、上記の事情を鑑みてなされたものであり、歩行者等への注意喚起のために適切な車両想起音を車外へ出力することができる新たな音響装置及び出力音制御方法を提供することを目的とする。 The present invention has been made in view of the above circumstances, and provides a new acoustic device and an output sound control method capable of outputting an appropriate vehicle recall sound to the outside of the vehicle for alerting pedestrians and the like. The purpose is to do.
 本発明は、第1の観点からすると、車両の外部に向けて外部出力音を出力する音出力部に、外部出力音信号を供給する音響装置であって、前記外部出力音信号を生成して、前記音出力部へ供給する供給部と;前記供給部を制御する制御部と;前記車両の車室内における車室内音の波形関連情報及び音量情報の少なくとも一方を取得する取得部と;を備え、前記制御部は、前記取得部による取得結果に基づいて、前記外部出力音信号の生成を制御する、ことを特徴とする音響装置である。 From a first aspect, the present invention is an acoustic device that supplies an external output sound signal to a sound output unit that outputs an external output sound toward the outside of the vehicle, and generates the external output sound signal. A supply unit that supplies the sound output unit; a control unit that controls the supply unit; and an acquisition unit that acquires at least one of the waveform related information and volume information of the vehicle interior sound in the vehicle interior of the vehicle. The control unit controls the generation of the external output sound signal based on the acquisition result by the acquisition unit.
 本発明は、第2の観点からすると、外部出力音信号を生成して、車両の外部に向けて外部出力音を出力する音出力部へ供給する供給部を備える音響装置において使用される出力音制御方法であって、前記車両の車室内における車室内音の波形関連情報及び音量情報の少なくとも一方を取得する取得工程と;前記取得工程における取得結果に基づいて、前記外部出力音信号の生成を制御する制御工程と;を備えることを特徴とする出力音制御方法である。 From a second aspect, the present invention provides an output sound used in an acoustic device including a supply unit that generates an external output sound signal and supplies the external output sound to a sound output unit that outputs the external output sound toward the outside of the vehicle. An acquisition step of acquiring at least one of waveform related information and volume information of vehicle interior sound in the vehicle interior of the vehicle; and generation of the external output sound signal based on the acquisition result in the acquisition step And a control step for controlling the output sound.
 本発明は、第3の観点からすると、本発明の出力音制御方法を演算部に実行させる、ことを特徴とする出力音制御プログラムである。 From the third aspect, the present invention is an output sound control program characterized by causing an arithmetic unit to execute the output sound control method of the present invention.
 本発明は、第4の観点からすると、本発明の出力音制御プログラムが、演算部により読み取り可能に記録されている、ことを特徴とする記録媒体である。 From the fourth aspect, the present invention is a recording medium in which the output sound control program of the present invention is recorded so as to be readable by a calculation unit.
本発明の第1実施形態に係る音響装置の構成を説明するためのブロック図である。It is a block diagram for demonstrating the structure of the audio equipment which concerns on 1st Embodiment of this invention. 本発明の第2実施形態に係る音響装置の構成を説明するためのブロック図である。It is a block diagram for demonstrating the structure of the audio equipment which concerns on 2nd Embodiment of this invention. 本発明の第1実施例に係る音響装置の構成を概略的に説明するためのブロック図である。It is a block diagram for demonstrating schematically the structure of the audio equipment based on 1st Example of this invention. 図3の装置における車両の外部に向けて出力する車両想起音の発生の制御処理を説明するためのフローチャートである。It is a flowchart for demonstrating control processing of generation | occurrence | production of the vehicle recall sound output toward the exterior of the vehicle in the apparatus of FIG. 本発明の第2実施例に係る音響装置の構成を概略的に説明するためのブロック図である。It is a block diagram for demonstrating schematically the structure of the audio equipment which concerns on 2nd Example of this invention. 本発明の第3実施例に係る音響装置の構成を概略的に説明するためのブロック図である。It is a block diagram for demonstrating schematically the structure of the audio equipment which concerns on 3rd Example of this invention. 図6の装置における車両の外部に向けて出力する車両想起音の発生の制御処理を説明するためのフローチャートである。FIG. 7 is a flowchart for explaining a control process of generation of a vehicle-like sound output toward the outside of the vehicle in the apparatus of FIG. 6.
 以下、本発明の実施形態を、添付図面を参照して説明する。なお、以下の説明及び図面においては、同一又は同等の要素には同一の符号を付し、重複する説明を省略する。 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the following description and drawings, the same or equivalent elements are denoted by the same reference numerals, and redundant description is omitted.
 [第1実施形態]
 まず、本発明の第1実施形態の音響装置700Aについて、図1を参照して説明する。
[First Embodiment]
First, an acoustic device 700A according to a first embodiment of the present invention will be described with reference to FIG.
 <構成>
 図1には、第1実施形態に係る音響装置700Aの概略的な構成が示されている。図1に示されるように、音響装置700Aは、電気自動車MV(以下、「車両MV」と呼ぶ)に搭載され、音出力部790が接続されるようになっている。
<Configuration>
FIG. 1 shows a schematic configuration of an acoustic device 700A according to the first embodiment. As shown in FIG. 1, the acoustic device 700A is mounted on an electric vehicle MV (hereinafter referred to as “vehicle MV”), and a sound output unit 790 is connected thereto.
 ここで、音出力部790は、スピーカを備えて構成される。音出力部790は、音響装置700Aから送られた外部出力音信号を受ける。そして、音出力部790は、外部出力音信号に従った外部出力音を、車両MVの外部へ向けて出力する。 Here, the sound output unit 790 includes a speaker. The sound output unit 790 receives an external output sound signal sent from the acoustic device 700A. And the sound output part 790 outputs the external output sound according to an external output sound signal toward the exterior of the vehicle MV.
 上記の音響装置700Aは、記憶部710と、取得部720と、操作部730とを備えている。また、音響装置700Aは、制御部740と、供給部750とを備えている。 The above-described acoustic device 700A includes a storage unit 710, an acquisition unit 720, and an operation unit 730. The acoustic device 700 </ b> A includes a control unit 740 and a supply unit 750.
 上記の記憶部710は、不揮発性の記憶領域を有している。この記憶部710には、供給部750がアクセスできるようになっている。記憶部710の当該不揮発性の記憶領域には、車両想起音に関する音源情報が記憶される。そして、この音源情報は、複数の音データから構成されている。当該複数の音データは、時系列データとなっており、これらの複数の音データが時間順次に並べられることにより、音波形が形成されるようになっている。 The storage unit 710 has a nonvolatile storage area. The storage unit 710 can be accessed by the supply unit 750. In the non-volatile storage area of the storage unit 710, sound source information related to the vehicle recall sound is stored. The sound source information is composed of a plurality of sound data. The plurality of sound data is time-series data, and a sound waveform is formed by arranging the plurality of sound data in time sequence.
 ここで、「車両想起音」は、歩行者等に対して、車両MVの存在を報知できるような音である。例えば、「車両想起音」としては、擬似的なエンジン音や、正弦波形の音等が挙げられる。 Here, the “vehicle recall sound” is a sound that can notify a pedestrian or the like of the presence of the vehicle MV. For example, “vehicle recall sound” includes pseudo engine sound, sine waveform sound, and the like.
 上記の取得部720は、車両MVの車室内における車室内音の波形関連情報及び音量情報の少なくとも一方を取得する。ここで、「波形関連情報」とは、車室内音の波形に寄与している音の種類に関する情報である。なお、本第1実施形態では、取得部720は、「波形関連情報」として、車室内音に擬似エンジン音が含まれているか否かの情報を取得するようになっている。 The acquisition unit 720 acquires at least one of the waveform related information and volume information of the vehicle interior sound in the vehicle interior of the vehicle MV. Here, the “waveform related information” is information regarding the type of sound contributing to the waveform of the vehicle interior sound. In the first embodiment, the acquisition unit 720 acquires information as to whether or not a pseudo engine sound is included in the vehicle interior sound as “waveform related information”.
 取得部720による取得結果は、制御部740へ送られる。本第1実施形態では、取得部720は、車室内における所定位置で収音した収音結果の解析を行い、車室内における車室内音の波形関連情報及び音量情報を取得するようになっている。 The acquisition result by the acquisition unit 720 is sent to the control unit 740. In the first embodiment, the acquisition unit 720 analyzes a sound collection result collected at a predetermined position in the vehicle interior, and acquires waveform-related information and volume information of the vehicle interior sound in the vehicle interior. .
 上記の操作部730は、キー部を備えて構成される。操作部730は、車両MVの利用者が操作可能であり、操作部730を利用した指定入力により、制御部740に対して、外部出力音信号の生成に関する指定が行われる。 The operation unit 730 includes a key unit. The operation unit 730 can be operated by a user of the vehicle MV, and designation regarding generation of an external output sound signal is performed to the control unit 740 by designation input using the operation unit 730.
 上記の制御部740は、取得部720から送られた取得結果を受ける。また、制御部740は、操作部730から送られた外部出力音信号の生成に関する指定入力を受ける。そして、制御部740は、当該指定入力の内容を参照しつつ、取得部720による取得結果に基づいて、供給部750による外部出力音信号の生成を制御する。制御部740による制御処理の詳細については、後述する。 The control unit 740 receives the acquisition result sent from the acquisition unit 720. In addition, the control unit 740 receives a designation input related to generation of an external output sound signal sent from the operation unit 730. And the control part 740 controls the production | generation of the external output sound signal by the supply part 750 based on the acquisition result by the acquisition part 720, referring the content of the said designation | designated input. Details of the control processing by the control unit 740 will be described later.
 上記の供給部750は、制御部740による制御に従って、記憶部710から音源情報を読み取って外部出力音信号を生成する。こうして生成された外部出力音信号は、音出力部790へ送られる。 The supply unit 750 reads the sound source information from the storage unit 710 and generates an external output sound signal under the control of the control unit 740. The external output sound signal generated in this way is sent to the sound output unit 790.
 <動作>
 上記のように構成された音響装置700Aの動作について、説明する。
<Operation>
The operation of the acoustic device 700A configured as described above will be described.
 この音響装置700Aでは、取得部720が、車室内における車室内音の波形関連情報及び音量情報を取得する。そして、取得部720は、取得結果を制御部740へ送る。 In this acoustic apparatus 700A, the acquisition unit 720 acquires the waveform related information and volume information of the vehicle interior sound in the vehicle interior. Then, the acquisition unit 720 sends the acquisition result to the control unit 740.
 取得部720から送られた取得結果を受けた制御部740は、取得結果に基づいて、車室内音に擬似エンジン音が含まれるか否かを判断する。そして、車室内音に擬似エンジン音が含まれると判断したときには、制御部740は、外部出力音信号を供給部750に生成させるための信号生成制御指令を生成する。ここで、本第1実施形態では、操作部730を利用した指定入力により、外部出力音信号を生成させない指定がなされている状態であっても、制御部740は、外部出力音信号を供給部750に生成させるようになっている。 Upon receiving the acquisition result sent from the acquisition unit 720, the control unit 740 determines whether or not the engine sound is included in the vehicle interior sound based on the acquisition result. When determining that the engine interior sound is included in the vehicle interior sound, the control unit 740 generates a signal generation control command for causing the supply unit 750 to generate the external output sound signal. Here, in the first embodiment, the control unit 740 supplies the external output sound signal to the supply unit even in a state in which the designation not using the operation unit 730 is made so as not to generate the external output sound signal. 750 is generated.
 また、制御部740は、取得部720による取得結果に基づいて、車室内に出力されている車室内音の音量が所定値以上であるか否かを判断する。そして、車室内音の音量が所定値以上であると判断したときにも、制御部740は、外部出力音信号を供給部750に生成させるための信号生成制御指令を生成する。ここで、本第1実施形態では、操作部730を利用した指定入力により、外部出力音信号を生成させない指定がなされている状態であっても、車室内音に擬似エンジン音が含まれる場合と同様に、制御部740は、外部出力音信号を供給部750に生成させるようになっている。 Further, the control unit 740 determines whether or not the volume of the vehicle interior sound output to the vehicle interior is greater than or equal to a predetermined value based on the acquisition result by the acquisition unit 720. Even when it is determined that the volume of the vehicle interior sound is equal to or higher than the predetermined value, the control unit 740 generates a signal generation control command for causing the supply unit 750 to generate the external output sound signal. Here, in the first embodiment, even when the designation that does not generate the external output sound signal is made by the designation input using the operation unit 730, the vehicle interior sound includes the pseudo engine sound. Similarly, the control unit 740 causes the supply unit 750 to generate an external output sound signal.
 供給部750は、信号生成制御指令を受けると、記憶部710内の音源情報に含まれる音データを順次読み取る。そして、供給部750は、読み取られた音データを、予め定められた周期で、順次、内部的に出力しつつ、再生音の音量調整を施す。この結果、外部出力音信号が生成される。こうして生成された外部出力音信号は、音出力部790へ送られる。 When the supply unit 750 receives the signal generation control command, the supply unit 750 sequentially reads the sound data included in the sound source information in the storage unit 710. Then, the supply unit 750 adjusts the volume of the reproduced sound while sequentially outputting the read sound data internally in a predetermined cycle. As a result, an external output sound signal is generated. The external output sound signal generated in this way is sent to the sound output unit 790.
 外部出力音信号を受けた音出力部790は、外部出力音信号に従った車両想起音を車両MVの外部に向けて出力する。この結果、操作部730を利用した指定入力により、外部出力音信号を生成させない指定がなされている状態であっても、車室内音に擬似エンジン音が含まれる場合や、車室内音の音量が所定値以上である場合には、車両想起音が、車外へ出力される。 The sound output unit 790 that has received the external output sound signal outputs the vehicle recall sound according to the external output sound signal toward the outside of the vehicle MV. As a result, even when the designation that does not generate the external output sound signal is made by the designation input using the operation unit 730, the vehicle interior sound includes the pseudo engine sound or the volume of the vehicle interior sound is high. If the value is equal to or greater than the predetermined value, the vehicle recall sound is output outside the vehicle.
 以上説明したように、本第1実施形態では、取得部720が、車室内における車室内音の波形関連情報及び音量情報を取得する。制御部740は、取得部720による取得結果に基づいて、車室内音に擬似エンジン音が含まれる否かを判断する。そして、車室内音に擬似エンジン音が含まれると判断したときには、外部出力音信号を生成させない指定がなされている状態であっても、制御部740は、外部出力音信号を供給部750に生成させる。 As described above, in the first embodiment, the acquisition unit 720 acquires vehicle interior sound waveform related information and volume information in the vehicle interior. The control unit 740 determines whether or not the pseudo engine sound is included in the vehicle interior sound based on the acquisition result by the acquisition unit 720. Then, when it is determined that the engine interior sound is included in the vehicle interior sound, the control unit 740 generates the external output sound signal to the supply unit 750 even when it is specified that the external output sound signal is not generated. Let
 また、制御部740は、取得部720による取得結果に基づいて、車室内に出力されている車室内音の音量が所定値以上であるか否かを判断する。そして、車室内音の音量が所定値以上であると判断したときにも、外部出力音信号を生成させない指定がなされている状態であっても、制御部740は、外部出力音信号を供給部750に生成させる。 Further, the control unit 740 determines whether or not the volume of the vehicle interior sound output to the vehicle interior is greater than or equal to a predetermined value based on the acquisition result by the acquisition unit 720. Even when it is determined that the volume of the vehicle interior sound is equal to or higher than the predetermined value, the control unit 740 supplies the external output sound signal to the supply unit even if it is specified that the external output sound signal is not generated. 750 to generate.
 この結果、車室内音に擬似エンジン音が含まれる場合や、車室内音の音量が所定値以上である場合には、車両想起音が車外へ出力される。 As a result, when the engine interior sound is included in the vehicle interior sound, or when the volume of the vehicle interior sound is equal to or higher than a predetermined value, the vehicle recall sound is output outside the vehicle.
 したがって、本発明の第1実施形態によれば、歩行者等への注意喚起のために適切な車両想起音を車外へ出力することができる。 Therefore, according to the first embodiment of the present invention, it is possible to output a vehicle recall sound appropriate for alerting pedestrians and the like to the outside of the vehicle.
 [第2実施形態]
 次に、本発明の第2実施形態の音響装置700Bについて、図2を参照して説明する。
[Second Embodiment]
Next, an acoustic device 700B according to a second embodiment of the present invention will be described with reference to FIG.
 <構成>
 図2には、第2実施形態に係る音響装置700Bの概略的な構成が示されている。図2に示されるように、音響装置700Bは、サーバ装置810と、端末装置910とを備えている。ここで、サーバ装置810と端末装置910との間では、通信ネットワーク500を利用したデータ通信が可能となっている。
<Configuration>
FIG. 2 shows a schematic configuration of an acoustic device 700B according to the second embodiment. As illustrated in FIG. 2, the acoustic device 700 </ b> B includes a server device 810 and a terminal device 910. Here, data communication using the communication network 500 is possible between the server device 810 and the terminal device 910.
 上記のサーバ装置810は、例えば、建屋内の固定的な位置に設置される。サーバ装置810は、記憶部710と、制御部740と、供給部750とを備えている。 The server device 810 is installed at a fixed position in a building, for example. The server device 810 includes a storage unit 710, a control unit 740, and a supply unit 750.
 上記の端末装置910は、車両MVに搭載される。端末装置910は、取得部720と、操作部730とを備えている。また、車両MVには、音出力部790が搭載されている。 The terminal device 910 is mounted on the vehicle MV. The terminal device 910 includes an acquisition unit 720 and an operation unit 730. In addition, a sound output unit 790 is mounted on the vehicle MV.
 すなわち、音響装置700Bは、上述した第1実施形態の音響装置700Aと比べて、取得部720が取得結果を制御部740へ送る際、操作部730が指定入力を制御部740へ送る際、及び、供給部750が外部出力音信号を音出力部790へ送る際に、通信ネットワーク500を利用したデータ通信が行われることが、音響装置700Aと異なっている。 That is, the acoustic device 700B is compared with the acoustic device 700A of the first embodiment described above, when the acquisition unit 720 sends the acquisition result to the control unit 740, when the operation unit 730 sends the designation input to the control unit 740, and When the supply unit 750 sends the external output sound signal to the sound output unit 790, data communication using the communication network 500 is performed, which is different from the acoustic device 700A.
 <動作>
 上記のように構成された音響装置700Bの動作について、説明する。なお、サーバ装置810は、常時、動作しているものとする。
<Operation>
The operation of the acoustic device 700B configured as described above will be described. Note that the server device 810 is always operating.
 この音響装置700Bでは、端末装置910における取得部720が、車室内における車室内音の波形関連情報及び音量情報を取得する。そして、取得部720は、通信ネットワーク500を介して、取得結果をサーバ装置810へ送る。また、端末装置910における操作部730が、利用者が指定した外部出力音信号の生成に関する指定入力を、通信ネットワーク500を介して、サーバ装置810へ送る。 In this acoustic device 700B, the acquisition unit 720 in the terminal device 910 acquires the vehicle interior sound waveform related information and volume information in the vehicle interior. Then, the acquisition unit 720 sends the acquisition result to the server device 810 via the communication network 500. In addition, the operation unit 730 in the terminal device 910 sends a designation input related to generation of an external output sound signal designated by the user to the server device 810 via the communication network 500.
 サーバ装置810では、制御部740が、取得部720から送られた取得結果を受ける。そして、制御部740は、第1実施形態の場合と同様に、操作部730から送られた指定入力の内容を参照しつつ、取得結果に基づいて、外部出力音信号を供給部750に生成させるための信号生成制御指令を生成し、供給部750へ送る。 In the server device 810, the control unit 740 receives the acquisition result sent from the acquisition unit 720. And the control part 740 makes the supply part 750 produce | generate an external output sound signal based on an acquisition result, referring the content of the designation | designated input sent from the operation part 730 similarly to the case of 1st Embodiment. A signal generation control command is generated and sent to the supply unit 750.
 供給部750は、制御部740から送られた信号生成制御指令を受けると、第1実施形態の場合と同様に、記憶部710内の音源情報に含まれる音データを順次読み取り、外部出力音信号を生成する。そして、供給部750は、通信ネットワーク500を介して、生成された外部出力音信号を音出力部790へ送る。 Upon receiving the signal generation control command sent from the control unit 740, the supply unit 750 sequentially reads the sound data included in the sound source information in the storage unit 710, as in the first embodiment, and outputs the external output sound signal. Is generated. Then, the supply unit 750 sends the generated external output sound signal to the sound output unit 790 via the communication network 500.
 この結果、操作部730を利用した指定入力により、外部出力音信号を生成させない指定がなされている状態であっても、車室内音に擬似エンジン音が含まれる場合や、車室内音の音量が所定値以上である場合には、音出力部790が、車両想起音を車外へ出力する。 As a result, even when the designation that does not generate the external output sound signal is made by the designation input using the operation unit 730, the vehicle interior sound includes the pseudo engine sound or the volume of the vehicle interior sound is high. If the value is equal to or greater than the predetermined value, the sound output unit 790 outputs the vehicle recall sound to the outside of the vehicle.
 以上説明したように、本第2実施形態では、上述した第1実施形態の場合と同様に、歩行者等への注意喚起のために適切な車両想起音を車外へ出力することができる。 As described above, in the second embodiment, as in the case of the first embodiment described above, it is possible to output an appropriate vehicle recall sound to the outside of the vehicle for alerting pedestrians and the like.
 [実施形態の変形]
 なお、上記の第1及び第2実施形態では、取得部は、車室内における所定位置で収音した収音結果の解析を行い、車室内における車室内音の波形関連情報及び音量情報を取得するようにした。これに対して、取得部が、車室内に車室内音を出力する車室内音響装置と通信を行い、車室内音の波形関連情報及び音量情報の少なくとも一方を取得するようにしてもよい。
[Modification of Embodiment]
In the first and second embodiments described above, the acquisition unit analyzes a sound collection result collected at a predetermined position in the vehicle interior, and acquires waveform-related information and volume information of the vehicle interior sound in the vehicle interior. I did it. On the other hand, the acquisition unit may communicate with a vehicle interior acoustic device that outputs vehicle interior sound into the vehicle interior to acquire at least one of the waveform related information and volume information of the vehicle interior sound.
 また、制御部が、車室内に車室内音を出力させる制御も行う構成を採用して、制御部による車室内音の出力に関する制御情報から、取得部が、車室内音の波形関連情報及び音量情報の少なくとも一方を取得するようにしてもよい。 Further, the control unit adopts a configuration that also performs control to output the vehicle interior sound into the vehicle interior, and from the control information related to the output of the vehicle interior sound by the control unit, the acquisition unit obtains the waveform related information and volume of the vehicle interior sound. You may make it acquire at least one of information.
 また、上記の第1及び第2実施形態では、車室内音に擬似エンジン音が含まれる場合、及び、車室内音の音量が所定値以上である場合には、外部出力音信号を生成させない指定がなされている状態であっても、制御部は、強制的に外部出力音信号を供給部に生成させるようにした。これに対して、外部出力音信号を生成させない指定がなされている状態で、車室内音に擬似エンジン音が含まれる場合にのみ、制御部が強制的に外部出力音信号を供給部に生成させるようにしてもよい。また、外部出力音信号を生成させない指定がなされている状態で、車室内音の音量が所定値以上である場合にのみ、制御部が強制的に外部出力音信号を供給部に生成させるようにしてもよい。 In the first and second embodiments described above, when the engine sound is included in the vehicle interior sound, and when the volume of the vehicle interior sound is equal to or higher than the predetermined value, the external output sound signal is not generated. Even in a state in which the control is performed, the control unit forcibly causes the supply unit to generate an external output sound signal. On the other hand, the control unit forcibly causes the supply unit to generate the external output sound signal only when the engine interior sound is included in the vehicle interior sound in a state where it is specified not to generate the external output sound signal. You may do it. In addition, the control unit forcibly causes the supply unit to generate the external output sound signal only when the volume of the vehicle interior sound is equal to or higher than a predetermined value in a state where the generation of the external output sound signal is not specified. May be.
 また、上記の第1及び第2実施形態では、車室内音に擬似エンジン音が含まれる場合、及び、車室内音の音量が所定値以上である場合には、外部出力音信号を生成させない指定がなされている状態であっても、制御部は、強制的に外部出力音信号を供給部に生成させるようにした。これに対して、上記2つの場合以外であって、車室内の音環境が、交通安全の観点から歩行者等への注意喚起のために適切な車両想起音を車外へ出力することが望ましい状態にある場合にも、制御部は、強制的に外部出力音信号を供給部に生成させるようにしてもよい。 In the first and second embodiments described above, when the engine sound is included in the vehicle interior sound, and when the volume of the vehicle interior sound is equal to or higher than the predetermined value, the external output sound signal is not generated. Even in a state in which the control is performed, the control unit forcibly causes the supply unit to generate an external output sound signal. On the other hand, except for the above two cases, it is desirable that the sound environment in the passenger compartment outputs an appropriate vehicle recall sound outside the vehicle for alerting pedestrians from the viewpoint of traffic safety. In this case, the control unit may force the supply unit to generate an external output sound signal.
 また、上記の第1及び第2実施形態では、音響装置は音出力部を備えないようにしたが、利用可能な既存の音出力部が無い場合には、音響装置が音出力部を備える構成としてもよい。 In the first and second embodiments, the acoustic device is not provided with a sound output unit. However, when there is no existing sound output unit that can be used, the acoustic device includes a sound output unit. It is good.
 また、上記の第1及び第2実施形態では、音響装置は記憶部を備えるようにしたが、音源情報を記憶した既存の記憶部が存在する場合には、当該既存の記憶部を利用するようにし、音響装置が記憶部を備えない構成としてもよい。 In the first and second embodiments described above, the acoustic device is provided with a storage unit. However, when there is an existing storage unit that stores sound source information, the existing storage unit is used. In addition, the acoustic device may not have a storage unit.
 また、第2実施形態では、サーバ装置810が、記憶部710と、制御部740と、供給部750とを備えるようにしたが、これらの構成要素のいずれについても、任意に車両側に搭載するようにできる。 Further, in the second embodiment, the server device 810 includes the storage unit 710, the control unit 740, and the supply unit 750, but any of these components is arbitrarily mounted on the vehicle side. You can
 以下、本発明の音響装置の実施例を、図3~図7を参照して説明する。なお、以下の説明及び図面においては、同一又は同等の要素については同一の符号を付し、重複する説明を省略する。 Hereinafter, embodiments of the acoustic device of the present invention will be described with reference to FIGS. In the following description and drawings, the same or equivalent elements are denoted by the same reference numerals, and redundant description is omitted.
 [第1実施例]
 まず、本発明の第1実施例を、図3及び図4を主に参照して説明する。
[First embodiment]
First, a first embodiment of the present invention will be described with reference mainly to FIGS.
 <構成>
 図3には、第1実施例に係る音響装置100Aの概略的な構成が示されている。なお、音響装置100Aは、上述した第1実施形態の音響装置700A(図1参照)の一態様となっている。
<Configuration>
FIG. 3 shows a schematic configuration of the acoustic device 100A according to the first embodiment. The acoustic device 100A is an aspect of the acoustic device 700A (see FIG. 1) of the first embodiment described above.
 音響装置100Aは、電気モータを駆動機構とし、道路上を走行する車両CRに搭載される。この車両CRには、音響装置100Aに接続される音出力部790としての音出力部210、及び、車速センサ220が接続されている。また、本第1実施例では、音響装置100Aは、車室内音響装置300Aと接続されている。 The acoustic device 100A is mounted on a vehicle CR that travels on a road using an electric motor as a drive mechanism. A sound output unit 210 as a sound output unit 790 connected to the acoustic device 100A and a vehicle speed sensor 220 are connected to the vehicle CR. In the first embodiment, the acoustic device 100A is connected to the vehicle interior acoustic device 300A.
 ここで、上記の音出力部210は、左側前方へ向けて音を出力する左スピーカと、右側前方へ向けて音を出力する右スピーカとを備えて構成されている。この音出力部210は、音響装置100Aから送られた外部出力音信号AOSを受ける。そして、音出力部210は、当該外部出力音信号AOSに従って、左右のスピーカから車両CRの外部に向けて外部出力音を出力する。 Here, the sound output unit 210 includes a left speaker that outputs sound toward the left front and a right speaker that outputs sound toward the right front. The sound output unit 210 receives an external output sound signal AOS sent from the acoustic device 100A. Then, the sound output unit 210 outputs an external output sound from the left and right speakers to the outside of the vehicle CR according to the external output sound signal AOS.
 また、上記の車速センサ220は、車両CRの車輪又は車軸の回転を検出する。車速センサ220による車速検出結果SPSは、音響装置100Aへ送られる。 Further, the vehicle speed sensor 220 detects the rotation of the wheel or axle of the vehicle CR. The vehicle speed detection result SPS by the vehicle speed sensor 220 is sent to the acoustic device 100A.
 また、上記の車室内音響装置300Aは、車室内へ向けて車室内音を出力するスピーカを備えて構成されている。この車室内音響装置300Aは、音響装置100Aの後述する制御部170Aによる制御のもとで、擬似エンジン音や楽曲等を再生して、再生音を車室内に向けて出力する。 Further, the above-described vehicle interior acoustic device 300A includes a speaker that outputs vehicle interior sound toward the vehicle interior. The vehicle interior acoustic device 300A reproduces simulated engine sound, music, and the like under the control of a control unit 170A (described later) of the acoustic device 100A, and outputs the reproduced sound toward the vehicle interior.
 次に、音響装置100Aの構成について、説明する。音響装置100Aは、図3に示されるように、記憶部110と、走行情報収集部120とを備えている。また、音響装置100Aは、供給部750としての供給部130と、操作部730としての操作入力部150とを備えている。さらに、音響装置100Aは、取得部720及び制御部740としての制御部170Aを備えている。 Next, the configuration of the acoustic device 100A will be described. As illustrated in FIG. 3, the acoustic device 100 </ b> A includes a storage unit 110 and a travel information collection unit 120. The acoustic device 100 </ b> A includes a supply unit 130 as a supply unit 750 and an operation input unit 150 as an operation unit 730. Furthermore, the acoustic device 100A includes an acquisition unit 720 and a control unit 170A as the control unit 740.
 上記の記憶部110は、メモリ素子を備えて構成され、音響装置100Aにおいて利用される様々な情報データが記憶される。こうした情報データには、音源情報SSIが含まれている。この記憶部110には、供給部130及び制御部170Aがアクセスできるようになっている。 The storage unit 110 includes a memory element, and stores various information data used in the acoustic device 100A. Such information data includes sound source information SSI. The storage unit 110 can be accessed by the supply unit 130 and the control unit 170A.
 音源情報SSIは、複数の音データ(音データ#j1,音データ#j2,…,音データ#jN)から構成されている。これらの音データ#j1~#jNの順次読み取りを繰り返しつつ、所定の周期τで読み取り順に出力することにより、音信号が生成されるようになっている。 The sound source information SSI is composed of a plurality of sound data (sound data # j1, sound data # j2,..., Sound data #jN). A sound signal is generated by repeating the sequential reading of the sound data # j1 to #jN and outputting in order of reading at a predetermined period τ.
 上記の走行情報収集部120は、車速センサ220から送られた車速検出結果SPSを受ける。そして、走行情報収集部120は、車速検出結果SPSを、制御部170Aで取扱可能な形態の車速情報SPに変換する。こうして得られた車速情報SPは、制御部170Aへ送られる。 The traveling information collection unit 120 receives the vehicle speed detection result SPS sent from the vehicle speed sensor 220. Then, the travel information collection unit 120 converts the vehicle speed detection result SPS into vehicle speed information SP in a form that can be handled by the control unit 170A. The vehicle speed information SP thus obtained is sent to the control unit 170A.
 上記の供給部130は、制御部170Aによる制御のもとで、音源情報SSIに含まれる複数の音データを、順次、音データSDDとして読み取った後、所定の周期τで、読み取られた音データを、順次、内部的に出力する。そして、供給部130は、内部的に出力した信号に対して、制御部170Aから送られた音量指定値VLCに従って音量調整処理を施して、外部出力音信号AOSを生成する。こうして生成された外部出力音信号AOSは、音出力部210へ送られる。 The supply unit 130 sequentially reads a plurality of sound data included in the sound source information SSI as sound data SDD under the control of the control unit 170A, and then reads the sound data with a predetermined period τ. Are sequentially output internally. Then, the supply unit 130 performs a volume adjustment process on the internally output signal according to the volume specification value VLC sent from the control unit 170A, and generates an external output sound signal AOS. The external output sound signal AOS thus generated is sent to the sound output unit 210.
 上記の操作入力部150は、音響装置100Aの本体部に設けられたキー部、及び/又はキー部を備えるリモート入力装置等により構成される。ここで、本体部に設けられたキー部としては、表示デバイスに設けられたタッチパネルを用いることができる、なお、キー部を有する構成に代えて、又は併用して音声認識技術を利用して音声にて入力する構成を採用することもできる。 The above-described operation input unit 150 includes a key unit provided in the main body of the acoustic device 100A and / or a remote input device including the key unit. Here, a touch panel provided in the display device can be used as the key part provided in the main body part. In addition, instead of the configuration having the key part or in combination, the voice using the voice recognition technology can be used. It is also possible to adopt a configuration in which input is performed at.
 この操作入力部150を利用者が操作することにより、外部出力音信号AOSの生成に関する指定が設定できるようになっている。操作入力部150を利用して行われる入力内容は、操作入力データIPDとして、操作入力部150から制御部170Aへ送られる。 The user can operate the operation input unit 150 to set the specification related to the generation of the external output sound signal AOS. The input content performed using the operation input unit 150 is sent as operation input data IPD from the operation input unit 150 to the control unit 170A.
 上記の制御部170Aは、中央処理装置(CPU)を備えて構成されている。この制御部170Aは、所定のプログラムを実行することにより、音響装置100Aにおける車両CRの外部へ向けての外部出力音制御処理を行う。制御部170Aによる外部出力音制御処理については、後述する。 The above-described control unit 170A includes a central processing unit (CPU). The control unit 170A executes an external output sound control process toward the outside of the vehicle CR in the acoustic device 100A by executing a predetermined program. The external output sound control process by the control unit 170A will be described later.
 また、制御部170Aは、本第1実施例では、車室内音響装置300Aによる車室内音出力の内部出力音制御処理を行う。かかる内部出力音制御処理に際して、制御部170Aは、操作入力部150を利用して入力された内部出力音の出力の要否、内部出力音の種類(擬似エンジン音、楽曲再生音等に対応する識別子等)及び内部出力音の出力音量の指定内容を含む内部出力音指定ISCを、車室内音響装置300Aへ送る。このため、制御部170Aは、車室内音響装置300Aによる内部出力音の出力の有無、種類及び出力音量を把握できるようになっている。 Further, in the first embodiment, the control unit 170A performs an internal output sound control process of the vehicle interior sound output by the vehicle interior acoustic device 300A. In the internal output sound control process, the control unit 170A corresponds to the necessity of output of the internal output sound input using the operation input unit 150, the type of internal output sound (pseudo engine sound, music playback sound, etc.). An internal output sound designating ISC including the contents of designating the output volume of the identifier and the like and the internal output sound is sent to the vehicle interior acoustic device 300A. For this reason, 170 A of control parts can grasp | ascertain the presence or absence, the kind, and output volume of an internal output sound by 300 A of vehicle interior acoustic apparatuses.
 [動作]
 以上のようにして構成された音響装置100Aの動作について、制御部170Aによる外部出力音制御処理に主に着目して説明する。
[Operation]
The operation of the acoustic device 100A configured as described above will be described mainly focusing on the external output sound control processing by the control unit 170A.
 本第1実施例では、音響装置100Aの動作が開始されると、図4に示されるように、まず、ステップS11において、制御部170Aが、外部出力音信号AOSを生成させない旨の指定がなされているか否かを判定する。この判定の結果が否定的であった場合(ステップS11:N)には、処理は後述するステップS15へ進む。一方、ステップS11における判定の結果が肯定的であった場合(ステップS11:Y)には、処理はステップS12へ進む。 In the first embodiment, when the operation of the acoustic device 100A is started, as shown in FIG. 4, first, in step S11, the control unit 170A is designated not to generate the external output sound signal AOS. It is determined whether or not. If the result of this determination is negative (step S11: N), the process proceeds to step S15 described later. On the other hand, if the result of the determination in step S11 is affirmative (step S11: Y), the process proceeds to step S12.
 まず、ステップS12では、制御部170Aが、車室内音響装置300Aに対する内部出力音の出力の要否の指定内容に基づいて、車室内音響装置300Aが内部出力音を、車室内へ向けて出力しているか否かを判定する。この判定の結果が否定的であった場合(ステップS12:N)には、処理はステップS11へ戻る。一方、ステップS12における判定の結果が肯定的であった場合(ステップS12:Y)には、処理はステップS13へ進む。 First, in step S12, the control unit 170A outputs the internal output sound toward the vehicle interior based on the designated content of whether or not to output the internal output sound to the vehicle interior acoustic device 300A. It is determined whether or not. If the result of this determination is negative (step S12: N), the process returns to step S11. On the other hand, when the result of the determination in step S12 is affirmative (step S12: Y), the process proceeds to step S13.
 ステップS13では、制御部170Aが、車室内音響装置300Aに対する内部出力音の種類の指定内容に基づいて、内部出力音に擬似エンジン音が含まれるか否かを判定することにより、車室内音に擬似エンジン音が含まれているか否かを判断する。この判定の結果が否定的であった場合(ステップS13:N)には、処理はステップS14へ進む。ステップS14では、制御部170Aが、車室内音響装置300Aに対する内部出力音の出力音量の指定内容に基づいて、車室内に出力されている内部出力音の音量が所定値以上であるかを判定することにより、車室内音の音量が所定値以上であるかを判断する。ここで、「所定値」は、車両想起音を外部へ出力することが交通安全上好ましい車室内音の音量の観点から、実験、シミュレーション、経験等に基づいて、予め定められる。 In step S13, the control unit 170A determines whether or not the internal output sound includes a pseudo engine sound based on the specified content of the type of the internal output sound for the vehicle interior acoustic device 300A. It is determined whether or not a pseudo engine sound is included. If the result of this determination is negative (step S13: N), the process proceeds to step S14. In step S14, control unit 170A determines whether or not the volume of the internal output sound output to the vehicle interior is greater than or equal to a predetermined value based on the designated content of the output volume of the internal output sound for vehicle interior acoustic device 300A. Thus, it is determined whether the volume of the vehicle interior sound is equal to or higher than a predetermined value. Here, the “predetermined value” is determined in advance based on experiments, simulations, experiences, and the like from the viewpoint of the volume of vehicle interior sound for which it is preferable for the vehicle safety sound to be output to the outside.
 上述したステップS13における判定の結果が肯定的であった場合(ステップS13:Y)、又は、ステップS14における判定の結果が肯定的であった場合(ステップS14:Y)には、処理はステップS15へ進む。 If the determination result in step S13 described above is affirmative (step S13: Y), or if the determination result in step S14 is affirmative (step S14: Y), the process proceeds to step S15. Proceed to
 ステップS15では、制御部170Aが、外部出力音信号AOSを供給部130に生成させるための信号生成制御指令PDCを生成する。そして、制御部170Aは、信号生成制御指令PDCを供給部130へ送る。また、制御部170Aは、走行情報収集部120から送られた車速情報SPに基づいて、音量指定値VLCを生成し、生成された音量指定値VLCを供給部130へ送る。 In step S15, the control unit 170A generates a signal generation control command PDC for causing the supply unit 130 to generate the external output sound signal AOS. Then, the control unit 170A sends a signal generation control command PDC to the supply unit 130. In addition, the control unit 170A generates a volume designation value VLC based on the vehicle speed information SP sent from the travel information collection unit 120, and sends the generated volume designation value VLC to the supply unit 130.
 供給部130は、上述した信号生成制御指令PDC及び音量指定値VLCを受けると、記憶部110内の音源情報SSIに含まれる音データを順次読み取る。そして、供給部130は、読み取られた音データを、所定の周期τで、順次、内部的に出力しつつ、音量指定値VLCに従って、音量調整を施して、外部出力音信号AOSを生成する。こうして生成された外部出力音信号AOSは、音出力部210へ送られる。 When the supply unit 130 receives the signal generation control command PDC and the sound volume designation value VLC described above, the supply unit 130 sequentially reads sound data included in the sound source information SSI in the storage unit 110. The supplying unit 130 adjusts the volume according to the volume specification value VLC while internally outputting the read sound data sequentially in a predetermined cycle τ, and generates an external output sound signal AOS. The external output sound signal AOS thus generated is sent to the sound output unit 210.
 供給部130から送られた外部出力音信号AOSを受けた音出力部210は、外部出力音信号AOSに従った音を車外へ出力する。この結果、制御部170Aによる外部出力音制御処理に従って、車両想起音が車外へ出力される。この後、処理はステップS11へ戻る。 The sound output unit 210 that has received the external output sound signal AOS sent from the supply unit 130 outputs a sound according to the external output sound signal AOS to the outside of the vehicle. As a result, the vehicle recall sound is output outside the vehicle according to the external output sound control process by the control unit 170A. Thereafter, the process returns to step S11.
 一方、上述したステップS14における判定の結果が否定的であった場合(ステップS14:N)には、処理はステップS16へ進む。ステップS16では、制御部170Aが、外部出力音信号AOSを供給部130に生成させない旨の信号生成制御指令PDCを生成する。そして、制御部170Aは、外部出力音信号AOSを生成させない旨の信号生成制御指令PDCを供給部130へ送る。 On the other hand, when the result of the determination in step S14 described above is negative (step S14: N), the process proceeds to step S16. In step S16, control unit 170A generates a signal generation control command PDC indicating that external supply sound signal AOS is not generated by supply unit 130. Then, the control unit 170A sends a signal generation control command PDC to the effect that the external output sound signal AOS is not generated to the supply unit 130.
 供給部130は、当該信号生成制御指令PDCを受けると、外部出力音信号AOSを生成している場合には、当該外部出力音信号AOSの生成を中断する。この後、処理はステップS11へ戻る。 When the supply unit 130 receives the signal generation control command PDC, the supply unit 130 interrupts the generation of the external output sound signal AOS when the external output sound signal AOS is generated. Thereafter, the process returns to step S11.
 以後、上記のステップS11~S16の処理が繰り返されて、外部出力音制御処理が行われる。 Thereafter, the processes in steps S11 to S16 are repeated, and the external output sound control process is performed.
 以上説明したように、本第1実施例では、制御部170Aが、車室内音響装置300Aの内部出力音制御を行うに際して、車室内音響装置300Aによる内部出力音の出力の要否、種類及び出力音量を把握する。そして、制御部170Aは、車室内音響装置300Aに対する内部出力音の出力の要否の指定内容に基づいて、車室内音響装置300Aが内部出力音を、車室内へ向けて出力しているか否かを判定する。引き続き、制御部170Aは、当該判定の結果が肯定的であった場合に、車室内音響装置300Aに対する内部出力音の種類の指定内容に基づいて、内部出力音に擬似エンジン音が含まれるか否かを判定することにより、車室内音に擬似エンジン音が含まれているか否かを判断する。そして、制御部170Aは、車室内音に擬似エンジン音が含まれると判断したときには、外部出力音信号AOSを生成させない指定がなされている状態であっても、外部出力音信号AOSを供給部130に生成させる。 As described above, in the first embodiment, when the control unit 170A performs the internal output sound control of the vehicle interior acoustic device 300A, the necessity, type and output of the internal output sound by the vehicle interior acoustic device 300A. Know the volume. Then, the controller 170A determines whether or not the vehicle interior acoustic device 300A outputs the internal output sound toward the vehicle interior based on the designated content of whether or not to output the internal output sound to the vehicle interior acoustic device 300A. Determine. Subsequently, when the result of the determination is affirmative, the controller 170A determines whether or not the engine output sound includes the pseudo engine sound based on the specified content of the type of the engine output sound for the vehicle interior acoustic device 300A. It is determined whether or not a pseudo engine sound is included in the vehicle interior sound. When the controller 170A determines that the engine interior sound is included in the vehicle interior sound, the controller 130A supplies the external output sound signal AOS to the supply unit 130 even when it is specified that the external output sound signal AOS is not generated. To generate.
 また、制御部170Aは、車室内音響装置300Aが内部出力音を車室内へ向けて出力している場合に、車室内音響装置300Aに対する内部出力音の出力音量の指定内容に基づいて、車室内に出力されている内部出力音の音量が所定値以上であるかを判定することにより、車室内音の音量が所定値以上であるかを判断する。そして、制御部170Aは、車室内音の音量が所定値以上であると判断したときにも、外部出力音信号AOSを生成させない指定がなされている状態であっても、外部出力音信号AOSを供給部130に生成させる。 In addition, when the vehicle interior acoustic device 300A outputs the internal output sound toward the vehicle interior, the controller 170A controls the vehicle interior based on the designated content of the output volume of the internal output sound for the vehicle interior acoustic device 300A. By determining whether the volume of the internal output sound that is output to the vehicle is greater than or equal to a predetermined value, it is determined whether the volume of the vehicle interior sound is greater than or equal to a predetermined value. The controller 170A determines the external output sound signal AOS even when it is determined that the volume of the vehicle interior sound is equal to or higher than the predetermined value, even when it is instructed not to generate the external output sound signal AOS. The supply unit 130 generates the data.
 この結果、内部出力音に擬似エンジン音が含まれる場合や、内部出力音の音量が所定値以上である場合には、車両想起音が車外へ出力される。 As a result, when the engine output sound is included in the internal output sound, or when the volume of the internal output sound is equal to or higher than a predetermined value, the vehicle recall sound is output outside the vehicle.
 したがって、本第1実施例によれば、歩行者等への注意喚起のために適切な車両想起音を車外へ出力することができる。 Therefore, according to the first embodiment, it is possible to output an appropriate vehicle recall sound to the outside of the vehicle for alerting pedestrians and the like.
 [第2実施例]
 次に、本発明の第2実施例を、図5を主に参照して説明する。
 <構成>
 図5には、第2実施例に係る音響装置100Bの概略的な構成が示されている。なお、音響装置100Bは、第1実施例に係る音響装置100Aと同様に、上述した第1実施形態の音響装置700A(図1参照)の一態様となっている。
[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference mainly to FIG.
<Configuration>
FIG. 5 shows a schematic configuration of an acoustic device 100B according to the second embodiment. The acoustic device 100B is an aspect of the acoustic device 700A (see FIG. 1) of the first embodiment described above, similarly to the acoustic device 100A according to the first example.
 図5に示されるように、音響装置100Bは、上述した第1実施例の音響装置100Aと比べて、制御部170Aに代えて、取得部720としての取得部160B及び制御部740としての制御部170Bを備える点が異なっている。また、本第2実施例では、音響装置100Bは、車室内音響装置300Bと接続されている。以下、これらの相違点に主に着目して、説明を行う。 As shown in FIG. 5, the acoustic device 100B is different from the acoustic device 100A of the first embodiment described above in that an acquisition unit 160B as the acquisition unit 720 and a control unit as the control unit 740 instead of the control unit 170A. The difference is that 170B is provided. In the second embodiment, the acoustic device 100B is connected to the vehicle interior acoustic device 300B. Hereinafter, the description will be given mainly focusing on these differences.
 ここで、上記の車室内音響装置300Bは、音響装置100Bとは独立しており、擬似エンジン音や楽曲等を再生して、再生音を車室内に向けて出力する。また、車室内音響装置300Bは、内部出力音の出力の有無、内部出力音の種類(擬似エンジン音、楽曲再生音に対応する識別子等)及び内部出力音の出力音量を、内部出力音情報ISIとして、取得部160Bへ送る。 Here, the above-described vehicle interior acoustic device 300B is independent of the acoustic device 100B, reproduces simulated engine sound, music, and the like and outputs the reproduced sound toward the vehicle interior. The vehicle interior acoustic device 300B also determines whether the internal output sound is output, the type of internal output sound (an identifier corresponding to the pseudo engine sound, the music playback sound, etc.) and the output volume of the internal output sound, and the internal output sound information ISI. To the acquisition unit 160B.
 上記の取得部160Bは、車室内音響装置300Bと通信を行う。そして、取得部160Bは、車室内音響装置300Bから車室内における内部出力音の波形関連情報及び音量情報を取得する。取得部160Bによる取得結果は、車室内音情報IAIとして、制御部170Bへ送られる。 The acquisition unit 160B communicates with the vehicle interior acoustic device 300B. And the acquisition part 160B acquires the waveform relevant information and volume information of the internal output sound in a vehicle interior from the vehicle interior acoustic apparatus 300B. The acquisition result by the acquisition unit 160B is sent to the control unit 170B as vehicle interior sound information IAI.
 ここで、取得部160Bは、内部出力音の出力の有無、内部出力音の種類に基づいて、「波形関連情報」として、内部出力音の出力の有無、及び、車室内音に擬似エンジン音が含まれているか否かの情報を取得する。また、取得部160Bは、内部出力音の出力音量を、「音量情報」として取得する。 Here, based on the presence / absence of the output of the internal output sound and the type of the internal output sound, the acquisition unit 160B obtains the presence / absence of the output of the internal output sound and the simulated engine sound as the vehicle interior sound as “waveform related information”. Get information about whether it is included. In addition, the acquisition unit 160B acquires the output volume of the internal output sound as “volume information”.
 上記の制御部170Bは、上述した制御部170Aと同様に、中央処理装置(CPU)を備えて構成されている。この制御部170Bは、取得部160Bから送られた車室内音情報IAIを受ける。そして、制御部170Bは、音響装置100Bにおける車両CRの外部へ向けての外部出力音制御処理を行う。制御部170Bによる外部出力音制御処理については、後述する。 The control unit 170B includes a central processing unit (CPU), similar to the control unit 170A described above. The control unit 170B receives the vehicle interior sound information IAI sent from the acquisition unit 160B. And the control part 170B performs the external output sound control process toward the exterior of vehicle CR in the audio equipment 100B. The external output sound control process by the controller 170B will be described later.
 <動作>
 以上のようにして構成された音響装置100Bの動作について、制御部170Bによる外部出力音制御処理に主に着目して説明する。
<Operation>
The operation of the acoustic device 100B configured as described above will be described mainly focusing on the external output sound control processing by the control unit 170B.
 本第2実施例では、音響装置100Bの動作が開始されると、取得部160Bによる車室内音響装置300Bとの通信が開始され、車室内音情報IAIが制御部170Bへ送られるようになる(図5参照)。 In the second embodiment, when the operation of the acoustic device 100B is started, communication with the vehicle interior acoustic device 300B by the acquisition unit 160B is started, and vehicle interior sound information IAI is sent to the control unit 170B ( (See FIG. 5).
 本第2実施例では、外部出力音制御処理に際して、第1実施例における図4のステップS11~S16と同様の処理を実行する。以下、図4のステップS11~S16のそれぞれに対応するステップの処理の説明に際して、対応する図4におけるステップ番号を使用して説明する。 In the second embodiment, the same processing as steps S11 to S16 in FIG. 4 in the first embodiment is executed in the external output sound control processing. Hereinafter, in the description of the processing of the steps corresponding to each of steps S11 to S16 in FIG. 4, the description will be made using the corresponding step numbers in FIG.
 外部出力音制御処理に際しては、まず、ステップS11において、制御部170Bが、第1実施例の場合と同様に、外部出力音信号AOSを生成させない旨の指定がなされているか否かを判定する。この判定の結果が否定的であった場合(ステップS11:N)には、処理はステップS15へ進む。一方、ステップS11における判定の結果が肯定的であった場合(ステップS11:Y)には、処理はステップS12へ進む。 In the external output sound control process, first, in step S11, as in the case of the first embodiment, the control unit 170B determines whether or not it is specified that the external output sound signal AOS is not generated. If the result of this determination is negative (step S11: N), the process proceeds to step S15. On the other hand, if the result of the determination in step S11 is affirmative (step S11: Y), the process proceeds to step S12.
 ステップS12では、制御部170Bが、車室内音情報IAIにおける内部出力音の出力の有無の情報に基づいて、車室内音響装置300Bが内部出力音を、車室内へ向けて出力しているか否かを判定する。この判定の結果が否定的であった場合(ステップS12:N)には、処理はステップS11へ戻る。一方、ステップS12における判定の結果が肯定的であった場合(ステップS12:Y)には、処理はステップS13へ進む。 In step S12, whether or not the control unit 170B outputs the internal output sound toward the vehicle interior based on the information on the presence or absence of the output of the internal output sound in the vehicle interior sound information IAI. Determine. If the result of this determination is negative (step S12: N), the process returns to step S11. On the other hand, when the result of the determination in step S12 is affirmative (step S12: Y), the process proceeds to step S13.
 ステップS13では、制御部170Bが、車室内音情報IAIにおける内部出力音の種類の情報に基づいて、内部出力音に擬似エンジン音が含まれるか否かを判定することにより、車室内音に擬似エンジン音が含まれているか否かを判断する。この判定の結果が否定的であった場合(ステップS13:N)には、処理はステップS14へ進む。ステップS14では、制御部170Bが、車室内音情報IAIにおける内部出力音の出力音量の情報に基づいて、内部出力音の音量が所定値以上であるかを判定することにより、車室内音の音量が所定値以上であるかを判断する。 In step S13, the control unit 170B determines whether or not the internal output sound includes a pseudo engine sound based on the information on the type of the internal output sound in the vehicle interior sound information IAI, thereby simulating the vehicle interior sound. It is determined whether or not engine sound is included. If the result of this determination is negative (step S13: N), the process proceeds to step S14. In step S14, the controller 170B determines whether the volume of the internal output sound is greater than or equal to a predetermined value based on the information on the output volume of the internal output sound in the vehicle interior sound information IAI. Is determined to be greater than or equal to a predetermined value.
 上述したステップS13における判定の結果が肯定的であった場合(ステップS13:Y)、又は、ステップS14における判定の結果が肯定的であった場合(ステップS14:Y)には、処理はステップS15へ進む。 If the determination result in step S13 described above is affirmative (step S13: Y), or if the determination result in step S14 is affirmative (step S14: Y), the process proceeds to step S15. Proceed to
 ステップS15では、制御部170Bが、第1実施例における処理と同様の処理を行う。ステップS15の処理が実行されると、制御部170Bによる外部出力音制御処理に従って、車両想起音が車外へ出力される。この後、処理はステップS11へ戻る。 In step S15, the control unit 170B performs the same processing as the processing in the first embodiment. When the process of step S15 is executed, the vehicle recall sound is output outside the vehicle according to the external output sound control process by the control unit 170B. Thereafter, the process returns to step S11.
 一方、上述したステップS14における判定の結果が否定的であった場合(ステップS14:N)には、処理はステップS16へ進む。ステップS16では、制御部170Bが、第1実施例における処理と同様の処理を行う。ステップS16の処理が実行されると、供給部130が外部出力音信号AOSを生成している場合には、当該外部出力音信号AOSの生成が中断される。この後、ステップS11へ戻る。 On the other hand, when the result of the determination in step S14 described above is negative (step S14: N), the process proceeds to step S16. In step S16, the control unit 170B performs the same process as the process in the first embodiment. When the process of step S16 is executed, when the supply unit 130 generates the external output sound signal AOS, the generation of the external output sound signal AOS is interrupted. Thereafter, the process returns to step S11.
 以上説明したように、本第2実施例では、取得部160Bが、車室内音響装置300Bと通信を行って内部出力音情報ISIを取得し、取得結果を車室内音情報IAIとして制御部170Bへ送る。制御部170Bは、車室内音情報IAIにおける内部出力音の出力の有無の情報に基づいて、車室内音響装置300Bが内部出力音を、車室内へ向けて出力しているか否かを判定する。引き続き、制御部170Bは、当該判定の結果が肯定的であった場合に、車室内音情報IAIにおける内部出力音の種類の情報に基づいて、内部出力音に擬似エンジン音が含まれるか否かを判定することにより、車室内音に擬似エンジン音が含まれているか否かを判断する。そして、制御部170Bは、車室内音に擬似エンジン音が含まれると判断したときには、外部出力音信号AOSを生成させない指定がなされている状態であっても、外部出力音信号AOSを供給部130に生成させる。 As described above, in the second embodiment, the acquisition unit 160B communicates with the vehicle interior acoustic device 300B to acquire the internal output sound information ISI, and the acquisition result is used as the vehicle interior sound information IAI to the control unit 170B. send. The controller 170B determines whether or not the vehicle interior acoustic device 300B outputs the internal output sound toward the vehicle interior based on the presence / absence of the output of the internal output sound in the vehicle interior sound information IAI. Subsequently, when the result of the determination is affirmative, the control unit 170B determines whether or not the internal output sound includes the pseudo engine sound based on the information on the type of the internal output sound in the vehicle interior sound information IAI. It is determined whether or not the pseudo engine sound is included in the vehicle interior sound. Then, when the controller 170B determines that the engine interior sound includes the pseudo engine sound, the controller 170B supplies the external output sound signal AOS to the supply unit 130 even in a state where it is specified that the external output sound signal AOS is not generated. To generate.
 また、制御部170Bは、車室内音響装置300Bが内部出力音を車室内へ向けて出力している場合に、車室内音情報IAIにおける内部出力音の出力音量の情報に基づいて、車室内に出力されている内部出力音の音量が所定値以上であるかを判定することにより、車室内音の音量が所定値以上であるかを判断する。そして、制御部170Bは、車室内音の音量が所定値以上であると判断したときにも、外部出力音信号AOSを生成させない指定がなされている状態であっても、外部出力音信号AOSを供給部130に生成させる。 In addition, when the vehicle interior acoustic device 300B outputs the internal output sound toward the vehicle interior, the control unit 170B generates the vehicle interior based on the output volume information of the internal output sound in the vehicle interior sound information IAI. By determining whether the volume of the output internal output sound is equal to or higher than a predetermined value, it is determined whether the volume of the vehicle interior sound is equal to or higher than a predetermined value. Then, even when it is determined that the volume of the vehicle interior sound is equal to or higher than the predetermined value, the control unit 170B does not generate the external output sound signal AOS even if it is specified that the external output sound signal AOS is not generated. The supply unit 130 generates the data.
 この結果、内部出力音に擬似エンジン音が含まれる場合や、内部出力音の音量が所定値以上である場合には、車両想起音が車外へ出力される。 As a result, when the engine output sound is included in the internal output sound, or when the volume of the internal output sound is equal to or higher than a predetermined value, the vehicle recall sound is output outside the vehicle.
 したがって、本第2実施例によれば、上述した第1実施例と同様に、歩行者等への注意喚起のために適切な車両想起音を車外へ出力することができる。 Therefore, according to the second embodiment, as in the first embodiment described above, it is possible to output a vehicle recall sound appropriate for alerting a pedestrian or the like to the outside of the vehicle.
 [第3実施例]
 次いで、本発明の第3実施例を、図6及び図7を主に参照して説明する。
[Third embodiment]
Next, a third embodiment of the present invention will be described with reference mainly to FIGS.
 <構成>
 図6には、第3実施例に係る音響装置100Cの概略的な構成が示されている。なお、音響装置100Cは、第2実施例に係る音響装置100Bと同様に、上述した第1実施形態の音響装置700A(図1参照)の一態様となっている。
<Configuration>
FIG. 6 shows a schematic configuration of an acoustic device 100C according to the third embodiment. The acoustic device 100C is an aspect of the acoustic device 700A (see FIG. 1) of the first embodiment described above, similarly to the acoustic device 100B according to the second example.
 図6に示されるように、音響装置100Cは、上述した第2実施例の音響装置100Bと比べて、取得部160Bに代えて取得部160Cを備える点、及び、制御部170Bに代えて制御部170Cを備える点が異なっている。以下、これらの相違点に主に着目して、説明を行う。 As shown in FIG. 6, the acoustic device 100 </ b> C includes an acquisition unit 160 </ b> C instead of the acquisition unit 160 </ b> B, and a control unit instead of the control unit 170 </ b> B, as compared with the acoustic device 100 </ b> B of the second embodiment described above. The difference is that 170C is provided. Hereinafter, the description will be given mainly focusing on these differences.
 上記の取得部160Cは、マイクロフォン等の収音デバイスを備えて構成されている。この取得部160Cは、車室内における運転席のヘッドレスト等の所定位置に設置され、車室内の音を収音する。そして、取得部160Cは、収音結果の解析を行い、車室内音の有無、車室内音の種類及び車室内音の出力音量の情報を取得する。こうして取得された情報は、車室内音情報IAIとして、制御部170Cへ送られる。 The acquisition unit 160C includes a sound collection device such as a microphone. This acquisition unit 160C is installed at a predetermined position such as a headrest of a driver's seat in the passenger compartment, and collects sound in the passenger compartment. Then, the acquisition unit 160C analyzes the sound collection result, and acquires information on the presence / absence of vehicle interior sound, the type of vehicle interior sound, and the output volume of vehicle interior sound. The information acquired in this way is sent to the controller 170C as vehicle interior sound information IAI.
 ここで、取得部160Cは、車室内音の有無、車室内音の種類に基づいて、「波形関連情報」として、車室内音の有無、及び、車室内音に擬似エンジン音が含まれているか否かの情報を取得する。また、取得部160Cは、車室内音の出力音量を、「音量情報」として取得する。 Here, based on the presence / absence of the vehicle interior sound and the type of the vehicle interior sound, the acquisition unit 160C includes the presence / absence of the vehicle interior sound and whether the vehicle interior sound includes the pseudo engine sound as the “waveform related information”. Get information about whether or not. In addition, the acquisition unit 160C acquires the output volume of the vehicle interior sound as “volume information”.
 上記の制御部170Cは、上述した制御部170Bと同様に、中央処理装置(CPU)を備えて構成されている。制御部170Cは、取得部160Cから送られた車室内音情報IAIを受けて、音響装置100Cにおける車両CRの外部へ向けての外部出力音制御処理を行う。制御部170Cによる外部出力音制御処理については、後述する。 The control unit 170C includes a central processing unit (CPU), similar to the control unit 170B described above. The control unit 170C receives the vehicle interior sound information IAI sent from the acquisition unit 160C, and performs an external output sound control process toward the outside of the vehicle CR in the acoustic device 100C. The external output sound control process by the controller 170C will be described later.
 <動作>
 以上のようにして構成された音響装置100Cの動作について、制御部170Cによる外部出力音制御処理に主に着目して説明する。
<Operation>
The operation of the acoustic device 100C configured as described above will be described mainly focusing on the external output sound control processing by the control unit 170C.
 本第3実施例では、音響装置100Cの動作が開始されると、取得部160Cによる車室内の音を収音動作が開始され、車室内音情報IAIが制御部170Cへ送られるようになる(図6参照)。 In the third embodiment, when the operation of the acoustic device 100C is started, the sound collecting operation of the vehicle interior sound by the acquisition unit 160C is started, and the vehicle interior sound information IAI is sent to the control unit 170C ( (See FIG. 6).
 外部出力音制御処理に際しては、図7に示されるように、まず、ステップS21において、制御部170Cが、第1実施例におけるステップS11と同様に、外部出力音信号AOSを生成させない旨の指定がなされているか否かを判定する。この判定の結果が否定的であった場合(ステップS21:N)には、処理はステップS25へ進む。一方、ステップS21における判定の結果が肯定的であった場合(ステップS21:Y)には、処理はステップS22へ進む。 In the external output sound control process, as shown in FIG. 7, first, in step S21, the controller 170C designates that the external output sound signal AOS is not generated, as in step S11 in the first embodiment. It is determined whether it is done. If the result of this determination is negative (step S21: N), the process proceeds to step S25. On the other hand, when the result of the determination in step S21 is affirmative (step S21: Y), the process proceeds to step S22.
 ステップS22では、制御部170Cが、車室内音情報IAIにおける車室内音の有無の情報に基づいて、車室内に車室内音が発生しているか否かを判定する。この判定の結果が否定的であった場合(ステップS22:N)には、処理はステップS21へ戻る。一方、ステップS22における判定の結果が肯定的であった場合(ステップS22:Y)には、処理はステップS23へ進む。 In step S22, the control unit 170C determines whether or not the vehicle interior sound is generated in the vehicle interior based on the information on the presence or absence of the vehicle interior sound in the vehicle interior sound information IAI. If the result of this determination is negative (step S22: N), the process returns to step S21. On the other hand, when the result of the determination in step S22 is affirmative (step S22: Y), the process proceeds to step S23.
 ステップS23では、制御部170Cが、車室内音情報IAIにおける車室内音の種類の情報に基づいて、車室内音に擬似エンジン音が含まるか否かを判定する。この判定の結果が否定的であった場合(ステップS23:N)には、処理はステップS24へ進む。ステップS24では、制御部170Cが、車室内音情報IAIにおける車室内音の出力音量の情報に基づいて、車室内音の音量が所定値以上であるか否かを判定する。 In step S23, the controller 170C determines whether or not the vehicle interior sound includes the pseudo engine sound based on the information on the type of the vehicle interior sound in the vehicle interior sound information IAI. If the result of this determination is negative (step S23: N), the process proceeds to step S24. In step S24, control unit 170C determines whether or not the volume of the vehicle interior sound is greater than or equal to a predetermined value based on the information on the output volume of the vehicle interior sound in vehicle interior sound information IAI.
 上述したステップS23における判定の結果が肯定的であった場合(ステップS23:Y)、又は、ステップS24における判定の結果が肯定的であった場合(ステップS24:Y)には、処理はステップS25へ進む。ステップS25では、制御部170Cが、第1実施例におけるステップS15と同様に、外部出力音信号AOSを供給部130に生成させるための信号生成制御指令PDCを生成する。こうしてステップS25の処理が実行されると、制御部170Cによる外部出力音制御処理に従って、車両想起音が車外へ出力される。この後、処理はステップS21へ戻る。 If the determination result in step S23 described above is affirmative (step S23: Y), or if the determination result in step S24 is affirmative (step S24: Y), the process proceeds to step S25. Proceed to In step S25, the controller 170C generates a signal generation control command PDC for causing the supply unit 130 to generate the external output sound signal AOS, as in step S15 in the first embodiment. When the process of step S25 is executed in this way, the vehicle recall sound is output outside the vehicle according to the external output sound control process by the control unit 170C. Thereafter, the process returns to step S21.
 一方、上述したステップS24における判定の結果が否定的であった場合(ステップS24:N)には、処理はステップS26へ進む。ステップS26では、制御部170Cが、第1実施例におけるステップS16と同様に、外部出力音信号AOSを供給部130に生成させない旨の信号生成制御指令PDCを生成する。こうしてステップS26の処理が実行されると、供給部130が外部出力音信号AOSを生成している場合には、当該外部出力音信号AOSの生成が中断される。この後、ステップS21へ戻る。 On the other hand, when the result of the determination in step S24 described above is negative (step S24: N), the process proceeds to step S26. In step S26, the control unit 170C generates a signal generation control command PDC indicating that the external output sound signal AOS is not generated by the supply unit 130, as in step S16 in the first embodiment. When the processing of step S26 is thus performed, if the supply unit 130 generates the external output sound signal AOS, the generation of the external output sound signal AOS is interrupted. Then, it returns to step S21.
 以後、上記のステップS21~S26の処理が繰り返されて、外部出力音制御処理が行われる。 Thereafter, the processes in steps S21 to S26 are repeated, and the external output sound control process is performed.
 以上説明したように、本第3実施例では、取得部160Cが、車室内の音を収音し、収音結果を解析して、車室内音の有無、車室内音の種類及び車室内音の出力音量の情報を取得する。こうして取得された取得結果は、車室内音情報IAIとして制御部170Cへ送られる。制御部170Cは、車室内音情報IAIにおける車室内音の有無の情報に基づいて、車室内に車室内音が発生しているか否かを判定する。引き続き、制御部170Cは、当該判定の結果が肯定的であった場合に、車室内音情報IAIにおける車室内音の種類に基づいて、車室内音に擬似エンジン音が含まれるか否かを判定する。そして、制御部170Cは、車室内音に擬似エンジン音が含まれると判定したときには、外部出力音信号AOSを生成させない指定がなされている状態であっても、外部出力音信号AOSを供給部130に生成させる。 As described above, in the third embodiment, the acquisition unit 160C collects the sound in the vehicle interior and analyzes the sound collection result to determine whether there is a vehicle interior sound, the type of vehicle interior sound, and the vehicle interior sound. Get the output volume information of. The acquisition result acquired in this way is sent to the controller 170C as vehicle interior sound information IAI. 170 C of control parts determine whether the vehicle interior sound has generate | occur | produced in the vehicle interior based on the information on the presence or absence of the vehicle interior sound in the vehicle interior sound information IAI. Subsequently, when the result of the determination is affirmative, the control unit 170C determines whether or not the pseudo engine sound is included in the vehicle interior sound based on the type of the vehicle interior sound in the vehicle interior sound information IAI. To do. When controller 170C determines that the engine interior sound is included in the vehicle interior sound, controller 130C supplies external output sound signal AOS even if it is specified that external output sound signal AOS is not generated. To generate.
 また、制御部170Cは、車室内に車室内音が発生している場合に、車室内音情報IAIにおける車室内音の出力音量の情報に基づいて、車室内に出力されている車室内音の音量が所定値以上であるか否かを判断する。そして、制御部170Cは、車室内音の音量が所定値以上であると判定したときにも、外部出力音信号AOSを生成させない指定がなされている状態であっても、外部出力音信号AOSを供給部130に生成させる。 In addition, when a vehicle interior sound is generated in the vehicle interior, the controller 170C controls the vehicle interior sound output in the vehicle interior based on the information on the output volume of the vehicle interior sound in the vehicle interior sound information IAI. It is determined whether the volume is equal to or higher than a predetermined value. Then, even when the control unit 170C determines that the volume of the vehicle interior sound is equal to or higher than the predetermined value, the controller 170C outputs the external output sound signal AOS even if it is specified that the external output sound signal AOS is not generated. The supply unit 130 generates the data.
 この結果、車室内音に擬似エンジン音が含まれる場合や、会話や歌声、楽曲の再生音等の車室内音の音量が所定値以上である場合には、車両想起音が車外へ出力される。 As a result, when the engine interior sound is included in the vehicle interior sound, or when the volume of the vehicle interior sound such as conversation, singing voice, music playback sound or the like is higher than a predetermined value, the vehicle recall sound is output outside the vehicle. .
 したがって、本第3実施例によれば、上述した第1及び第2実施例と同様に、歩行者等への注意喚起のために適切な車両想起音を車外へ出力することができる。 Therefore, according to the third embodiment, as in the first and second embodiments described above, it is possible to output a vehicle recall sound appropriate for alerting a pedestrian or the like outside the vehicle.
 [実施例の変形]
 本発明は、上記の実施例に限定されるものではなく、様々な変形が可能である。
[Modification of Example]
The present invention is not limited to the above-described embodiments, and various modifications can be made.
 例えば、上記の第1~第3実施例では、音響装置100A~100Cの構成要素が全て車両CRに搭載されるようにしたが、上述した第2実施形態のように、車両CRの搭載される端末装置と通信可能なサーバ装置が、音響装置100A~100Cの構成要素の一部を備えるようにしてもよい。 For example, in the first to third embodiments, all the components of the acoustic devices 100A to 100C are mounted on the vehicle CR. However, the vehicle CR is mounted as in the second embodiment described above. The server device that can communicate with the terminal device may include some of the components of the acoustic devices 100A to 100C.
 また、上記の第1~第3実施例では、音響装置100A~100Cは音出力部210を備えないようにしたが、利用可能な既存の音出力部210が無い場合には、音響装置100A~100Cが音出力部を備える構成としてもよい。 In the first to third embodiments, the acoustic devices 100A to 100C are not provided with the sound output unit 210. However, if there is no existing sound output unit 210 that can be used, the acoustic devices 100A to 100A are used. 100C may include a sound output unit.
 また、上記の第1~第3実施例では、音響装置100A~100Cが備える記憶部110が、音源情報SSIを記憶するようにしたが、音源情報SSIを記憶した既存の記憶部が存在する場合には、当該既存の記憶部を利用するようにし、記憶部110がこれらの情報を記憶しない構成としてもよい。 In the first to third embodiments, the storage unit 110 included in the acoustic devices 100A to 100C stores the sound source information SSI. However, there is an existing storage unit that stores the sound source information SSI. Alternatively, the existing storage unit may be used, and the storage unit 110 may not store such information.
 また、上記の第1~第3実施例では、供給部は、音源情報SSIを構成する音データを順次読み取り、所定の周期τで順次出力するようにしたが、当該周期τを車速情報SPに基づいて変化させることで、車速に応じて異なる周波数特性を有する音を出力させるようにしてもよい。 In the first to third embodiments, the supply unit sequentially reads the sound data constituting the sound source information SSI and sequentially outputs the sound data at a predetermined cycle τ. However, the cycle τ is used as the vehicle speed information SP. By changing based on this, sound having different frequency characteristics depending on the vehicle speed may be output.
 また、上記の第1~第3実施例では、車室内音に擬似エンジン音が含まれる場合、及び、車室内音の音量が所定値以上である場合には、外部出力音信号を生成させない指定がなされている状態であっても、制御部は、強制的に外部出力音信号を供給部に生成させるように制御した。これに対して、外部出力音信号を生成させない指定がなされている状態で、車室内音に擬似エンジン音が含まれる場合にのみ、制御部が強制的に外部出力音信号を供給部に生成させるように制御してもよい。また、外部出力音信号を生成させない指定がなされている状態で、車室内音の音量が所定値以上である場合にのみ、制御部が強制的に外部出力音信号を供給部に生成させるように制御してもよい。 Further, in the first to third embodiments described above, when the vehicle interior sound includes a pseudo engine sound, and when the volume of the vehicle interior sound is equal to or higher than a predetermined value, it is designated that the external output sound signal is not generated. Even in the state in which the control is performed, the control unit performs control so as to force the supply unit to generate an external output sound signal. On the other hand, the control unit forcibly causes the supply unit to generate the external output sound signal only when the engine interior sound is included in the vehicle interior sound in a state where it is specified not to generate the external output sound signal. You may control as follows. In addition, the control unit forcibly causes the supply unit to generate the external output sound signal only when the volume of the vehicle interior sound is equal to or higher than a predetermined value in the state where the generation of the external output sound signal is not specified. You may control.
 また、上記の第1~第3実施例では、車室内音に擬似エンジン音が含まれる場合、及び、車室内音の音量が所定値以上である場合には、外部出力音信号を生成させない指定がなされている状態であっても、制御部は、強制的に外部出力音信号を供給部に生成させるようにした。これに対して、上記2つの場合以外であって、車室内の音環境が、交通安全の観点から歩行者等への注意喚起のために適切な車両想起音を車外へ出力することが望ましい状態にある場合にも、制御部は、強制的に外部出力音信号を供給部に生成させるようにしてもよい。 Further, in the first to third embodiments described above, when the vehicle interior sound includes a pseudo engine sound, and when the volume of the vehicle interior sound is equal to or higher than a predetermined value, it is designated that the external output sound signal is not generated. Even in a state in which the control is performed, the control unit forcibly causes the supply unit to generate an external output sound signal. On the other hand, except for the above two cases, it is desirable that the sound environment in the passenger compartment outputs an appropriate vehicle recall sound outside the vehicle for alerting pedestrians from the viewpoint of traffic safety. In this case, the control unit may force the supply unit to generate an external output sound signal.
 また、上記の第1~第3実施例では、車室内音に擬似エンジン音が含まれる場合や、車室内音の音量が所定値以上である場合等には、音出力部が、車両想起音を車外へ出力するようにしたが、車両の車速が所定値以上である場合等、交通安全の観点から、車両想起音を車外へ出力する必要がない場合には、車両想起音を車外へ出力させないように制御を行うようにしてもよい。 In the first to third embodiments described above, when the vehicle interior sound includes a pseudo engine sound, or when the volume of the vehicle interior sound is equal to or higher than a predetermined value, the sound output unit performs the vehicle recall sound. Is output to the outside of the vehicle, but if there is no need to output the vehicle-like sound outside the vehicle from the viewpoint of traffic safety, such as when the vehicle speed is higher than the predetermined value, the vehicle-like sound is output outside the vehicle. You may make it control so that it may not be made.
 また、上記の第1実施例における音響装置100Aが、車室内の音を収音する第3実施例の取得部160Cを更に備える構成を採用するようにしてもよい。また、上記の第2実施例における音響装置100Bが、第3実施例の取得部160Cを更に備える構成を採用するようにしてもよい。この場合には、車室内音響装置から出力される内部出力音に擬似エンジン音が含まれる場合や、内部出力音の音量が所定値以上であるときに、車両想起音を車外へ出力することができるとともに、車室内の会話や歌声の音量が所定値以上であるときにおいても、車両想起音を車外へ出力することができる。 Also, the acoustic device 100A in the first embodiment may employ a configuration further including the acquisition unit 160C of the third embodiment that collects sound in the vehicle interior. Moreover, you may make it employ | adopt the structure with which the acoustic apparatus 100B in said 2nd Example is further provided with the acquisition part 160C of 3rd Example. In this case, when the internal output sound output from the vehicle interior acoustic device includes a pseudo engine sound, or when the volume of the internal output sound is equal to or higher than a predetermined value, the vehicle recall sound may be output outside the vehicle. In addition, the vehicle recall sound can be output outside the vehicle even when the volume of the conversation or singing voice in the passenger compartment is equal to or higher than a predetermined value.
 なお、上記の実施例1~3では、制御部170A~170Cがプログラムの実行により、外部出力音発生のための制御処理を行うようにしたが、制御部の全部又は一部を、専用のLSI(Large Scale Integrated circuit)等を用いたハードウェアにより行うようにしてもよい。 In the first to third embodiments, the control units 170A to 170C perform control processing for generating external output sound by executing a program. However, all or a part of the control unit is configured as a dedicated LSI. It may be performed by hardware using (Large Scale Integrated Circuit) or the like.
 また、制御部170A~170Cが実行するプログラムは、CD-ROM,DVD等の可搬型記録媒体に記録された形態で取得されるようにしてもよいし、インターネットなどのネットワークを介した配信の形態で取得されるようにしてもよい。 The program executed by the control units 170A to 170C may be acquired in a form recorded on a portable recording medium such as a CD-ROM or DVD, or distributed via a network such as the Internet. You may make it acquire by.

Claims (9)

  1.  車両の外部に向けて外部出力音を出力する音出力部に、外部出力音信号を供給する音響装置であって、
     前記外部出力音信号を生成して、前記音出力部へ供給する供給部と;
     前記供給部を制御する制御部と;
     前記車両の車室内における車室内音の波形関連情報及び音量情報の少なくとも一方を取得する取得部と;を備え、
     前記制御部は、前記取得部による取得結果に基づいて、前記外部出力音信号の生成を制御する、
     ことを特徴とする音響装置。
    An acoustic device that supplies an external output sound signal to a sound output unit that outputs an external output sound toward the outside of the vehicle,
    A supply unit that generates the external output sound signal and supplies the external output sound signal to the sound output unit;
    A control unit for controlling the supply unit;
    An acquisition unit that acquires at least one of waveform related information and volume information of vehicle interior sound in the vehicle interior of the vehicle,
    The control unit controls generation of the external output sound signal based on an acquisition result by the acquisition unit.
    An acoustic device characterized by that.
  2.  前記取得部による取得結果には、前記波形関連情報が含まれ、
     前記制御部は、前記取得された波形関連情報に基づいて、前記車室内音に擬似エンジン音が含まれると判断した場合に、前記外部出力音信号を前記供給部に生成させる、ことを特徴とする請求項1に記載の音響装置。
    The acquisition result by the acquisition unit includes the waveform related information,
    The control unit causes the supply unit to generate the external output sound signal when it is determined that a pseudo engine sound is included in the vehicle interior sound based on the acquired waveform-related information. The acoustic device according to claim 1.
  3.  前記車両の利用者が操作可能であり、前記制御部に対する指定入力が行われる操作部を更に備え、
     前記操作部を利用した指定入力により、前記外部出力音信号を生成させない指定がなされている状態において、前記取得された波形関連情報に基づいて、前記擬似エンジン音が前記車室内に出力されていると判断したときには、前記制御部は、前記外部出力音信号を前記供給部に生成させる、
     ことを特徴とする請求項2に記載の音響装置。
    The vehicle is further operable by a user, and further includes an operation unit for performing designation input to the control unit,
    The pseudo engine sound is output to the vehicle interior based on the acquired waveform-related information in a state in which the external input sound signal is not generated by the designation input using the operation unit. When it is determined, the control unit causes the supply unit to generate the external output sound signal.
    The acoustic device according to claim 2.
  4.  前記取得部による取得結果には、前記音量情報が含まれ、
     前記制御部は、前記取得された音量情報に基づいて、前記車室内に出力されている前記車室内音の音量が所定値以上であると判断したときに、前記外部出力音信号を前記供給部に生成させる、ことを特徴とする請求項1~3のいずれか一項に記載の音響装置。
    The acquisition result by the acquisition unit includes the volume information,
    When the control unit determines that the volume of the vehicle interior sound output to the vehicle interior is greater than or equal to a predetermined value based on the acquired volume information, the supply unit outputs the external output sound signal. The acoustic device according to any one of claims 1 to 3, wherein the acoustic device is generated.
  5.  前記車両の利用者が操作可能であり、前記制御部に対する指定入力が行われる操作部を更に備え、
     前記操作部を利用した指定入力により、前記外部出力音信号を生成させない指定がなされている状態において、前記取得された音量情報に基づいて、前記車室内音の音量が所定値以上であると判断したときには、前記制御部は、前記外部出力音信号を前記供給部に生成させる、
     ことを特徴とする請求項4に記載の音響装置。
    The vehicle is further operable by a user, and further includes an operation unit for performing designation input to the control unit,
    Based on the acquired volume information, it is determined that the volume of the vehicle interior sound is greater than or equal to a predetermined value in a state in which the external input sound signal is not generated by the designation input using the operation unit. When the control unit, the control unit causes the supply unit to generate the external output sound signal,
    The acoustic device according to claim 4.
  6.  前記取得部は、前記車室内における所定位置で収音した収音結果の解析を行い、前記波形関連情報及び前記音量情報を取得する、ことを特徴とする請求項1~5のいずれか一項に記載の音響装置。 6. The acquisition unit according to claim 1, wherein the acquisition unit analyzes a sound collection result collected at a predetermined position in the vehicle interior, and acquires the waveform related information and the volume information. The acoustic device described in 1.
  7.  外部出力音信号を生成して、車両の外部に向けて外部出力音を出力する音出力部へ供給する供給部を備える音響装置において使用される出力音制御方法であって、
     前記車両の車室内における車室内音の波形関連情報及び音量情報の少なくとも一方を取得する取得工程と;
     前記取得工程における取得結果に基づいて、前記外部出力音信号の生成を制御する制御工程と;
     を備えることを特徴とする出力音制御方法。
    An output sound control method used in an acoustic device including a supply unit that generates an external output sound signal and supplies the external output sound to a sound output unit that outputs the external output sound toward the outside of the vehicle,
    An acquisition step of acquiring at least one of waveform-related information and volume information of vehicle interior sound in the vehicle interior of the vehicle;
    A control step of controlling the generation of the external output sound signal based on the acquisition result in the acquisition step;
    An output sound control method comprising:
  8.  請求項7に記載の出力音制御方法を演算部に実行させる、ことを特徴とする出力音制御プログラム。 An output sound control program for causing an arithmetic unit to execute the output sound control method according to claim 7.
  9.  請求項8に記載の出力音制御プログラムが、演算部により読み取り可能に記録されている、ことを特徴とする記録媒体。 9. A recording medium, wherein the output sound control program according to claim 8 is recorded so as to be readable by a calculation unit.
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